RANKINGS: Latest Top 40 Prospects Update | MLB: UPDATED 2020 Draft Order

The Seattle Mariners farm system has completed its regular season. Double-A Arkansas begins its playoff run Wednesday. But there’s always time for reflection.

Here are the offensive statistical leaders among prospects that either rank in my Top 40 or are just outside that group as the offseason approaches.

For rate stats: 200 PA minimum

NO PLAYER POS LEVEL AVG
1 Julio Rodriguez OF A, A+ .326
2 Noelvi Marte SS R .309
3 Tim Lopes SS AAA .302
4 Donnie Walton SS AA .300
4 Jonatan Clase CF R .300
6 Joe Rizzo 3B A+ .298
6 Austin Shenton 3B SS, AA .298
6 Jake Fraley CF AA, AA .298
9 Evan White 1B AA .293
10 Jarred Kelenic CF A, A+, AA .291

No surprised here other than rookie-ball sensation Clase.

NO PLAYER POS LEVEL OBP
1 Jonatan Clase CF R .434
2 Arturo Guerrero OF R .397
3 Carter Bins C SS .391
4 Donnie Walton SS AA .390
5 Julio Rodriguez OF A, A+ .387
6 Milkar Perez 3B R .381
7 Austin Shenton 3B SS, A .376
8 Noelvi Marte SS R .371
9 Jake Fraley CF AA, AAA .365
10 Jarred Kelenic CF A, A+, AA .364

Clase had a great year, even slugging .444, and is a fun case to follow moving forward.

Bins hit .208 and while he mashed seven homers, he managed just three doubles and piled up strikeouts. He also walked a lot.

NO PLAYER POS LEVEL SLG
1 Jake Fraley CF AA, AAA .545
2 Jarrd Kelenic CF A, A+, AA .540
2 Julio Rodriguez OF A, A+ .540
4 Noelvi Marte SS R .511
5 Austin Shenton 3B SS, A .510
6 Cal Raleigh CF A+, AA .497
7 Evan White 1B AA .488
8 Tim Lopes SS AAA .476
9 Braden Bishop CF AAA .471
10 Shed Long 2B AAA .460

Fraley leading the way here might surprise some, and others might say “well, he was in the PCL.” But he slugged .539 in the Texas League in 61 games before spending 38 games in the ball-aided PCL.

NO PLAYER POS LEVEL HR
1 Cal Raleigh CF A+, AA 29
2 Jarrd Kelenic CF A, A+, AA 23
3 Jake Fraley CF AA, AAA 19
4 Evan White 1B AA 18
5 Julio Rodriguez OF A, A+ 12
5 Dom Thompson-Williams CF AA 12
7 Donnie Walton SS AA 11
7 Kyle Lewis OF AA 11
9 Noelvi Marte SS R 9
9 Shed Long 2B AAA 9

Marte and Long didn’t play a full season (short-season schedule, injury), but the only surprise here is perhaps Donnie Walton, who also ranked in the Top 10 in average and on-base percentage.

NO PLAYER POS LEVEL 2B
1 Jarrd Kelenic CF A, A+, AA 31
1 Tim Lopes SS AAA 31
3 Jake Fraley CF AA, AAA 27
4 Julio Rodriguez OF A, A+ 26
5 Cal Raleigh CF A+, AA 25
5 Kyle Lewis OF AA 25
7 Dom Thompson-Williams CF AA 24
8 Donnie Walton SS AA 22
9 Noelvi Marte SS R 18
10 Austin Shenton 3B AAA 17

Bishop, despite just 50 games played and 210 PAs, chimed in with 16 doubles, just missing the cut.

NO PLAYER POS LEVEL SB
1 Jonatan Clase CF R 31
2 Tim Lopes SS AAA 26
3 Jake Fraley CF AA, AAA 22
4 Jarrd Kelenic CF A, A+, AA 20
5 Noelvi Marte SS R 17
6 Dom Thompson-Williams CF AA 15
7 Arturo Guerrero OF R 11
9 Donnie Walton SS AA 10
9 Luis Liberato OF A+, AA 8
9 Milkar Perez 3B R 8

Guerrero is going to end up more of a power player but is a good enough athlete to take a base when it’s there. One thing to remember about stolen bases is pitchers and catchers both are works-in-progress dealing with the running game The lower the level, the more work needed, generally speaking.

NO PLAYER POS LEVEL wRC+
1 Julio Rodriguez OF A, A+ 164
2 Jarrd Kelenic CF A, A+, AA 152
2 Austin Shenton 3B SS, A 152
6 Jonatan Clase CF R 147
4 Noelvi Marte SS R 138
5 Jake Fraley SS AA, AAA 136
7 Donnie Walton SS AA 134
8 Evan White 1B AA 132
9 Carter Bins C SS 127
9 Arturo Guerrero OF R 127

Bins lands here in the strength of that OBP, but how about Walton?

Raleigh just missed here at 122 (he was amazing in the Cal League but challenged in the Texas League post promotion).