Monthly, I will recap the month that was in the Mariners farm system, including scouting notes, statistical review, and promotion analysis.
Buckle up, it was a fine month of May.
Noelvi Marte, SS | 6-1/190 | 19
A lot more ups than downs for Marte in his first month in professional baseball in the states, and he’s already flashing 60-grade game power from 70 raw power he shows off in batting practice.
As expected, he’s already looking more like a power player than a speed demon, despite 70 speed when a Tim Kissner-led international scouting department signed him three summers ago.
He’s managing at shortstop, and range isn’t of great concern at present, but there are reasons to buy him more as a third baseman; he’s 6-1 and just under 200 pounds at 19 years of age and has the frame to tack on another 10-20 pounds, which puts him more in the Matt Chapman, Anthony Rendon, Aramis Ramirez mold in terms of physical stature.
Marte still boasts above-average athleticism, so it’s not necessarily a closed door for him at shortstop, but he’d have to follow the Xander Bogaerts path; Bogaerts, amid concerns about his future position when he was in the minors, made vast improvements with his hands and footwork and became playable through efficiency, despite lacking great range, though without his offensive prowess, he, too, would not likely have remained at the position.
Scout: He has the look of a run producer that will provide defensive value, It’s still early in his time (in pro ball), so there is more than one potential end-result with him, but one of them is pretty big. He doesn’t cover the plate as well as Julio (Rodriguez) did there (West Virginia in 2019), but his swing is shorter. He’s not a shortstop for me, but he’s shown enough ability on the dirt to think he could land at third with a shot to be very good there.
Quick Word: It’s early, but it’s not crazy to think Marte has a real shot to be the best player among those currently in the organization. He’s likely to bring more defensive and positional value than Julio Rodriguez, and (again, small sample) is developing as fast as Jarred Kelenic did at a similar age. Defensively, third base is the most likely spot for him long-term, but he has good enough foot speed and arm strength to play a corner outfield spot, too.
I expect Marte to spend considerable time in Modesto before a promotion is in order.
Connor Phillips, RHP | 6-2/195 | 20
Phillips has shown above-average yet raw stuff, including mid-90’s heat and a projectable slider that flashes average. He has trouble finding a consistent release point thanks to a long arm path, but he’s aggressive with the fastball, which offers life and arm side run.
He also has a curveball is inconsistent but will flash as average, and is projectable to big-league levels.
Scout: It’s a No. 4 high profile for me, but given he’s younger than the standard college draftee he has a little more time to iron things out and push his physical abilities. I do like the fastball projection.
Quick Word: Right now, the safest projection for Phillips is reliever, but that’s also lazy and can be said about every single pitching prospect ever at some point in their careers. But it’s Year 1 in pro ball for Phillips, and there’s a solid foundation present which may allow him to evolve into a mid-rotation starter.
Phillips is likely to stay in Modesto for most or all of 2021.
Adam Macko, LHP | 6-0/180 | 20
Macko uses athleticism and deception to more than cover for a long arm path and lack of ideal size, and he’s increased his fastball velocity from 89-93 to more consistently in the low-90s and touching 95 mph.
His curveball has shown least average with enormous two-plane break and above-average command, and he’s done a good job staying on top of it to avoid it flattening out on its way to the plate.
He’s pitched inside to right-handed batters effectively, but as his slider gets better, he may be able to get them to chase out of the zone more often.
Scout: Let me just say this: If he were 6-4, 200, he’s their best pitching prospect and it’s not close. That’s where he is right now. (Fastball has) above-average life and movement, the breaking ball has two-plane break, and it’s sharp, and he clearly has good athleticism. He’ll be able to pitch up effectively and tear down good hitters with that bender. Maybe he’s Randy Wolf.
Quick Word: The fastball-curveball combo is loud, and everything plays up considering how well he hides the ball through his three-quarter arm slot. It’s the best
left-handed curveball in the system, including Brandon Williamson — at least through May.
Macko likely remains in Modesto through the season, but is the most likely of the younger Nuts arms to see Everett, outside Taylor Dollard.
Victor Labrada, CF | 5-9/175 | 21
Labrada got a late start but hit the ground running, both literally and figuratively. The left-handed hitting centerfielder has hit for average and some gap power, thanks to a quick swing and solid-average plate discipline. He uses the entire field, gets out of the box quickly and knows how to us his 65-grade speed.
Quick Word: The hope is Labrada moves quickly, starting with a mid-season promotion later this summer, resulting in a late-MLB debut. He’s most likely a part-time player, but there are some physical traits and early tools that have flashed level of big-league competence, suggesting at least a chance of an everyday option.
Despite a late start, Labrada could get a cup of coffee in Everett later this season.
Taylor Dollard, RHP | 6-3/200 | 22
The club’s 5th-round pick last June has outclassed the bats in Low-A West, missing bats at will and only showing vulnerability when he occasionally loses his delivery and falls behind in counts. He’s pounded the strike zone as one of the league’s best arms.
Quick Word: The stuff is average at present, but there’s some projection left Dollard’s frame and secondaries, and while his control is above average his command is fringe-average and inconsistent, something he won’t get away with as he moves through the minors. There’s a major-league arm here, but whether he serves in a relief role or as a good back-end starter is why we’re all here watching.
Dollard should be exposed to High-A sometime this summer and if he keeps throwign strikes it could come sooner than later.
Alberto Rodriguez, OF | 5-11/190 | 20
Rodriguez, a left-handed batter with above-average bat speed, has yet to string together consistent results in 2021, and a lot of his chances to do so hinders on his ability to make more contact — he’s whiffed in 33% of his PAs. But the swing path also needs work; he’s been pull happy and gets out front a lot, leading to weak contact — especially ground balls — pitcher-friendly counts and strikeouts.
Quick Word: Rodriguez has flashed what the club saw in him when they chose the outfielder as the return in the Taijuan Walker deal last summer. But the hit tool still has a long way to so and he doesn’t bring big-league speed (45) or defense (45) to the field.
Rodriguez’s hit tool needs a lot of work, suggesting a challenge beyond Low-A may not be wise in 2021.
Juan Querecuto, SS | 6-2/180 | 20
After three tough summers since signing, Querecuto is healthy and taking advantage of his opportunity. A natural shortstop, he’s moved around the infield and handled it well, and his bat has shown some ability, despite some pitch ID issues that have led to too many chases.
Quick Word: He’s a 50 runner with good hands and feet on defense but lacks the range to be a plus glove. He has the arm to play anywhere, at least in stretches, including third base, and the outfield if the Mariners want to make him a true utility option. He’ll have to make more contact — 25% K rate is too high, even considering the current environment — especially with 40-grade power.
Querecuto is very likely to remain in Modesto all season.
Luis Curvelo, RHP | 6-1/170 | 20
Curvelo is at least 15 pounds heavier than his listed 170, but regardless of his size there’s good, raw stuff here, and he’s absolutely slamming the strike zone with a fastball into the upper-90s and an average power slider with late break and tilt.
Quick Word: He’s always had good control, running walk rates of 3.3, 3.3, 7.7, and now 2.5, but he’s added two ticks of velocity since signing, and the slider has come a long way. He’s a reliever only and is a few years away, but his dominance for Modesto stands out enough to suggest a future big-league reliever, potentially one who can battle into high-leverage spots.
Curvelo could see Everett later this season if he maintains the control he’s displayed thus far.
Sam Carlson, RHP| 6-4/195 | 22
Carlson’s journey to his first full month of professional baseball took nearly four years, but he’s looked solid, showing more than just glimpses of an exceptionally clean, fluid delivery, an above-average slider, promising curveball, and velocity into the mid-90s. He’s had bouts with poor control which has kept him from dominating, and he’s still feeling out how his stuff will play.
It takes time for TJ recipients to pitch their back to good control and command, but it’s a great sign Carlson has the snap on his slider and looks the part of not only a $2 million draft pick, but a future big-league arm.
Scout: So, this is why the hype. I get it. I didn’t see him his draft year, I was out west, but we had guys who thought he was a top-15 pick and wrote him up that way. He was a bit out of sync, late with his arm, in the second start I saw, but it’s (present) average big-league stuff, and I think that curveball has a chance. Four pitch guy in the middle (of the rotation)?
Quick Word: Coming out, Carlson’s fastball had plane and natural sink, and his changeup feel was advanced for a prep arm. On his way back, he’s generated above-average four-seam ride which pairs well with the slider, and occasional upper-zone life that theoretically sets up the curveball and changeup. He is just getting started and has a lot to do, but he’s a prototype from a physical standpoint with athleticism to spare, suggesting a real path to remaining a starter.
Carlson just needs to pitch and getting aggressive too soon could be greatly detrimental to the right-hander getting the work he needs in his first year back after a long layoff.
Elvis Alvarado, RHR | 6-4/190 | 22
The converted outfielder has good stuff, led by a fastball sitting 93-97, and in the past has touched triple digits. His slider teases average but to miss bats will need more vertical break, depth, and command.
Quick Word: Alvarado is a bit like Yohan Ramirez; has the raw stuff, needs to throw more strikes with everything. He’s a reliever only, but the fastball is big enough to see time in bigs, provided he ends up finding the zone enough as he moves through the system.
Alvarado is still raw and the softer landing in Low-A West fits his needs better, suggesting he’ll remain in Modesto most or all of 2021.
Emerson Hancock, RHP | 6-4/215 | 22
Hancock made three abbreviated starts in May with satisfactory yet unspectacular results. But he has been efficient. He hasn’t walked any of the 36 batters he’s faced and has yielded just four hits.
Hancock hasn’t unleashed his entire arsenal yet, but his slider has been his out pitch so far, and likely the best chance he has for a plus offering that misses bats in the big leagues.
Quick Word: Seattle clearly is taking it slow with Hancock, who has gone 2.0, 2.2, and 4.2 innings with 6 days rest in between, then was skipped when his turn came up for start No. 4.
At the end of the day, Hancock is a four-pitch starter with an efficient delivery that should lead to above-average command and control, but while he refines his secondaries the Mariners want to get more fastball value out of him. He’s up to 97 mph, but at Georgia the pitch had natural sink and lacked the kind of high-spin life that generated swings and misses. Stay tuned.
At this point I’d be surprised if the club gets aggressive with Hancock in terms of promotion. He didn’t pitch the summer between his sophomore and junior years at Georgia, and didn’t get a lot of work in last summer with no MiLB season. I expect a lot of time in Everett, perhaps the entire schedule.
George Kirby, RHP | 6-4/220 | 23
Like Hancock, Kirby has been brought along slowly — even slower, considering he made two starts a week apart, covering 3.2 and 5.0 innings, then didn’t start the rest of the month — but his 12-1 K/BB ratio in 8/2 innings is about right for the 2019 first-round pick.
Kirby’s second start was nearly perfect as he did not allow a hit but issued his first walk as a professional.
Quick Word: The right-hander offers probability and a high floor, but there’s enough to dream on here to see amid-rotation starter within three years, and perhaps more. He’s pitching at 93-95 mph with 60 control and above-average command but has touched triple digits in short stints. His slider and curveball are fringe-average at present, however, and his changeup remains inconsistent. If he’s to move as quickly as his command suggests he could, he’ll need to delivery better crooked offerings.
Kirby may be a little more likely to see Double-A Arkansas than Hancock, and perhaps a little sooner, but a lot would have to happen in the next month or two for it to make sense.
Brandon Williamson, LHP | 6-6/210 | 23
Williamson was the best performer among the top arms in the system for the opening month, earning him Pitcher Prospect of the Month.
The highlight for the club’s 2019 second-round pick came in his final start of the month when he lasted 7.1 innings and allowed an earned run on a walk and two hits and struck out 13 of the 25 batters he faced. He threw 70 of his 95 pitches for strikes and tossed an immaculate inning in the bottom of the third.
Scout: This is what you draw up on the board from a physical standpoint. I’d like to see more athleticism in the delivery. He hides his release a bit, and the ball explodes out his hand. I had him 93-96 and he got swings and misses from 22-year-old top-5 round college bats at 93. You can see the curveball projection. Not sure if it’s a slider or cutter he’s throwing, but I like that idea, too. He’s going to move (quickly.)
Quick Word: Williamson is up to 97 mph and pitches with average command at 93-95 with life and tail, setting up an above-average curveball with a chance to be plus. He has a slider and changeup, too, but hasn’t used either all that much early on, which is par for the course for young arms this season, considering the off year and intermittent scheduling for spring training and the start of the MiLB season. There’s a mid-rotation profile here, but some upside, too, provided he develops through some long-term mechanical hurdles that often come with tall arms.
For me, Williamson is the most likely of the Everett starters to be promoted, and has the best shot at spending more than a few starts there.
Levi Stoudt, RHP | 6-1/200 | 23
Stoudt has been up and down out of the gate, struggling with command in issuing four walks in start No. 2 and six in start No. 4, but we shouldn’t forget these are the right-hander’s first four professional outings after having Tommy Johns surgery two years ago.
Stoudt has been mostly low-90s, touching 94-95, but has flashed a hard changeup and improving slider that has a chance to miss bats. He just hasn’t thrown enough strikes yet.
Quick Word: His athleticism and chance at three big-league pitches suggests a No. 4 profile, but his split-change might end up a 70-grade offering, and despite a lack of physical projection at 6-foot-1, 200 pounds and already 23 years of age, there aren’t stiff limits on his ultimate fastball velocity and value.
Stoudt, in his first pro season, has a lot of work to do before a promotion will jive, but he, too, simply needs innings more than a greater challenge.
Juan Then, RHP | 6-1/190 | 21
Then finished May with his best start of the year after feeling his way through his first three in abbreviated fashion. It’s a 91-95 mph fastball and promising slider, but he’s missing a quality third pitch and there are some delivery concerns when it comes to a rotation role, despite simple mechanics.
He was lights out in his most recent start, going six frames and allowing just two hits. He avoided walks and struck out six.
Quick Word: Then, typically pronounced ‘Ten’ despite vowels in Spanish carrying an ‘ay’ sound, is the highest-ranked reliever in the system, but is just 21 and has a chance to start if the changeup develops rather quickly. In a relief role he could see the majors next season.
As a starter, Then likely stays in Everett most or all of 2021, but in a relief role could move faster.
Isaiah Campbell, RHP | 6-4/230 | 23
Campbell has been piggybacking for 2-4 innings per outings to keep him stretched in ‘starter’ mode, and ultimately has four pitches, including a 55-grade slider and a split-change. He’s been up to 96 mph and in the past has reached 98. He creates plane with the fastball and at times can go fastball-split and induce worm burners for days.
But his velocity suggests going upper zone for whiffs, and he’s done some of that, too. He went 16.1 innings in his four outings in May, including 5.2 innings May 23 when he allowed just three baserunners.
There’s some concern lingering over some elbow soreness he experienced in 2018, but no sign of it this season, Campbell’s pro debut.
Quick Word: There’s a good chance Campbell ends up a multi-inning, three-pitch power reliever where he may add a tick or two of velo and sit upper-90s. He can throw his slider and curveball for strikes, though the curveball is a backburner offering for him right now. His chances to start are better than Then’s however, which is why I have him ranked higher.
Like the others who haven’t pitched much in pro ball, Campbell isn’t likely to move quickly as he garners experience and builds up arm strength in his first game action since the college season ended two years ago.
Matt Brash, RHP | 6-1/180 | 23
Brash has done some work on his delivery, giving him a chance to start, but we’re seeing some control and command issues early in his four May starts where he issued 11 walks, all in his three final outings of the month.
He’s missing bats — 16% swinging strike rate, 37% K rate — and isn’t allowing a lot of hard contact, so the stuff is working, but more strikes — and likely more adjustments to his mechanics — are necessary to project as a big-league starter.
Quick Word: Even as a multi-inning reliever, Brash projects as a valuable arm who has been up to 99 mph in side sessions, suggesting he can do that in a bullpen role. He offers deception and at least three pitches, so there’s no reason he can’t be a high-leverage option.
Brash’s delivery and ability to throw strikes likely keeps him from Double-A in 2021.
Carter Bins, C | 6-0/200 | 22
Bins’ strikeout rates are alarming, but he’s not swinging and missing much and he’s only a moderate chase swinger. He does take pitches and work counts, and his swing remains somewhat rotational, making him late and more likely to foul off balls he should put in play, perhaps creating too many two-strike counts.
He has flashed the power in games, but nothing is consistent yet, despite good strike zone awareness.
Quick Word: Bins is the No. 2 backstop in the system to start the year but concerns about his ability to hit for average — thanks to a bad swing — casts doubt on his ultimate future.
He has made some adjustments and is using more of the field now than in prior years, and he’s shown occasional game power to reflect above-average bat speed.
He’s solid athletically and early on has done a better job blocking balls in the dirt, though his framing remains below average. He has a very good arm that should play with better mechanics, something he’s been improving since Day 1.
Considering the work Bins has and continues to put in with his swing, I’ll be surprised if he sees Arkansas in 2021.
Kaden Polcovich, 2B | 5-10/185 | 22
Polcovich ended May at .236/.352/.382, showing gap power, above-average speed, and instincts that have allowed him show well at three positions — 2B, 3B, CF.
The one issue so far is his 26% strikeout rate, a mark for power bats not the next Daniel Descalso.
Quick Word: His left-handed swing is sound and more consistent than his righty version, and flashes some torque, suggesting average power is not entirely out of the question. But he may need to shorten up a bit to get to good velocity, and he’ll certainly to cut down on the swing and miss (16%).
It’s his first pro season, but it’s not entirely crazy to think he could spend the final month of 2021 in Double-A if he keeps progressing, but the contact rates are important.
Austin Shenton, 3B | 6-0/205 | 23
Shenton started the season OK, gathering five hits in four games, then went 2-for-22 with 10 strikeouts, fanning in 15 of 33 at-bats during one stretch the first half of the month.
Born of those struggles came the right kind of consistency, and he began to find the barrel more often. He finished the month with two three-hit games over the final eight days, and the power began to show.
Quick Word: Shenton came to pro ball as a hitter with a chance to bat .270/.340 with 12-15 homers, but is infusing more leverage into his swing now and could surpass the projection in time. Whether he’s a third baseman or not remains to be seen, but his arm allows for left field or first base, and his plate skills and pitch ID skills should allow him to make swing adjustments without damaging his ability to make contact.
Shenton has a shot to see Arkansas by year’s end and might be more likely to do so than all but one name in this report.
Zach DeLoach, OF | 6-1/205 | 22
In his first professional action since being the club’s second-round pick a year ago, DeLoach has been a bit up-and-down, but has had several strong games, flashing good athleticism, some power, and patience.
He ended the month batting .242/.333/.442 with five doubles, four homers, 11 walks and 21 strikeouts in 108 plate appearances, and has displayed plus defense in both corner spots.
Quick Word: He doesn’t have a true lead tool, but has no great weaknesses, either, and reminds me a bit of A’s outfielder Mark Canha, despite the handedness contrast. There’s above-average raw power in his swing and a chance at an especially useful role player in big leagues in a couple of years.
DeLoach is unlikely to see Arkansas this season, as he gets his first live action since his college season ended in 2019.
Julio Rodriguez, OF | 6-3/215 | 20
Rodriguez, who left the AquaSox to play for the Dominican Republic in the Olympic qualifying rounds in Florida late in the month, was awesome in May, lending more confidence he’ll hit for immense power without deterring the long-term evaluation of his ability to make consistent contact.
Seattle’s No. 2 prospect posted a trio of three-hit games, six total multi-hit efforts, and failed to reach base by hit or walk just twice in 21 games, despite the fact he’s three years younger than the average player in the league.
Scout: There’s a lot of upside at the plate, but I wonder how quickly he progresses versus more complete pitcher with his current swing mechanics and some of his tendencies.
Quick Word: He’s merely 20, and will be until the Alamo Bowl kicks off this winter, and there are superstar traits at which to marvel and dream, including 65-or 70-grade arm strength, baserunning instincts to spare, and well above-average bat speed that produces 70 raw power.
While he projects as an average glove and below-average runner, he’ll be fine in right field for a while and brings 40-homer pop and a chance to hit .270 in the current environment. But he does show a front side leak and gets pull happy at times, so he has work to do before we delete the risk from his profile.
I think he sees Arkansas this season, and is the most likely of the Sox’s bats to do so — and most likely the first — but ‘when’ isn’t as clear as fans would like to think. Risking rushing a 20-year-old is a very dangerous approach to player development, considering the lack of payoff; his MLB ETA doesn’t change much, if at all, by getting to Double-A in June rather than July or August. He still starts 2022 in Triple-A Tacoma.
Ian McKinney, LHP | 5-11/190 | 26
McKinney was outstanding for Arkansas in May, going at least five innings and punching out eight or more in each of his four starts.
He’s running a 41% strikeout rate into his first June outing, looking for his third straight start of at least six innings.
McKinney has always had a good a good curveball, but he’s added a cutter-slider to the mix and his command of a fringe-average fastball allows him to get to his secondaries consistently.
Quick Word: He’s 26 and not a big-league starter, or at least not for the long haul, but 90-93, touching 94, plus curveball with terrific arm speed, and a useful slider and changeup give him a chance to compete against major-league hitters in a condensed role.
I think he can handle Triple-A now and believe Seattle hnds him that challenge fairly soon.
Penn Murfee, RHP | 6-2/195 | 27
Murfee has been utilized as both a starter and reliever since the club selected him in Round 33 back in 2018, including 20 starts and 12 relief appearances in 2019. He’s in the Travs’ rotation now with mixed results.
In 17.1 innings, the right-hander has allowed 33 baserunners, including 19 in his most recent two starts.
He’s comfortably in the 89-91 mph range, reaching back for 93, which could tick up in a relief role. Murfee has shown he understands how to attack hitters, and while he may be a great right-on-right matchup, he’s improved his ability to pitch to lefties, burying the slider at the back foot and getting inside and at the top of the zone with the fastball for swings and misses, and going backside for early-count strikes.
Quick Word: At the end of the day, his sidearm delivery and fastball-slider combo project well in a multi-inning middle-relief role in the majors, reminiscent of Ramiro Mendoza or T.J. McFarland.
As a starter, Murfee has work to do and in the role likely stays in Arkansas all year. As a reliever, he could see the majors in September. So, depends on the club’s plan.
Ryne Inman, RHP | 6-5/215 | 25
For two years I spoke aloud about how Inman was a good candidate to transition to the bullpen and progress faster up the ladder, and the club made that move prior to the 2020 season, and we’re finally seeing it in games.
Inman, however, has landed on the IL after just three outings with the Travelers. In his three frames, he allowed two hits, a run, two walks, and struck out six of the 10 batters he faced.
Quick Word: When he’s right, Inman is 92-96 with a chance for more velocity, and a plus power curveball. The raw stuff suggests at least a middle reliver profile, with a chance to be a little more.
Inman has to get healthy before promotional conversations make sense.
Cal Raleigh, C | 6-3/215 | 24
Raleigh still has his naysayers, but it’s turned from “likely a first baseman” to “he’s probably just average” when it comes to his defense. He excels in some areas, however, despite limitations in others.
At the plate, Raleigh has shown more polish in the early going, increasing his contact rates and finding barrels from both sides of the plate with regularity. One scout, remembering the prevailing opinion on Raleigh from Draft day, said “it looks a little different, he’s done a good job developing his swing from each side.”
Raleigh’s two swings are vastly differently, too. It’s a power-based swing from the left-side and he’s more susceptible to upper-zone velocity and chasing down from that side, which shouldn’t surprise anyone since he’s a natural right-handed hitter.
As a righty, the swing is more consistent; he did lose some momentum in his development from the right side in high school, college and early in the minors due to a lack of consistent opportunity — he’d go several games without facing a lefty starter and only see limited lefty relievers.
“Maybe he gets to 15-18 homers, depending on how he manages the workload, but it sure looks like there will be good offensive production.”
Raleigh was my Hitter Prospect of the Month for May, thanks to a gargantuan effort.
Quick Word: Raleigh still gets a bad rap defensively, with scouts citing poor athleticism and technique that can be “choppy”, but when watching Raleigh catch, throw, jump out from behind the dish to make a play, or run the bases, I have zero problem imagining it all working in the majors. Many catchers lack the kind of athleticism players elsewhere on the field display on a daily basis.
I do think the bat will produce some swing and miss — and there likely will be stretches where the rates are high — but we may be watching a 40-45 grade hit tool inching toward average, which could lead to even more power.
I’m a bit bullish on Raleigh’s upside and always have been, but it’s tough to imagine even his median projection not warranting an all-star nod or two in his prime. His full upside comes with tons of doubt, but it’ll hover there until the smoke clears after a few big-league seasons.
The club has its reasons, of course, but I can’t think of one single legitimate baseball reason to keep Raleigh in Tacoma any longer. I would be more than moderately surprised if he sees July in a Rainiers uniform, as amazing as the club’s alternate road jerseys are.
Last Updated on June 2, 2021 by Jason A. Churchill
Jason A. Churchill
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