Seattle Mariners 

Leonys Martin: Extension Candidate?

Acquiring center fielder Leonys Martin was the best of the many moves made by Seattle Mariners general manager Jerry Dipoto last offseason. Having said that, should he consider signing his center fielder to a contract extension? If you simply look at the back of Martin’s baseball card, your gut reaction may be “no.”  After all, he posted a rather pedestrian .247/.306/.378 triple-slash — batting average/on-base percentage/slugging percentage — during his first season in Seattle. Still, if you recall an era when Mariner center fielders were among the best in baseball,…