Mayckol Guaipe

Mayckol Guaipe (for the record: MIY-kil GWIY-pay) made his major-league debut last June and then spent the rest of the season shuttling between Triple-A Tacoma and Seattle. He was unable to maintain the solid strikeout rates he posted the previous two years in the minors, neither at Tacoma nor Seattle. He was a disaster in middle relief for the Mariners, walking 13 and giving up five home runs in 26.2 innings. His fastball command needs work, especially to lefties (.455 batting average against), but his slider helps keep the ball on the ground effectively (1.8 GB/FB). The 6-foot-4 Guaipe likely will compete for a relief job in spring training, but new general manager Jerry Dipoto overhauled the bullpen in the offseason, which could leave Guaipe out of favor. Then again, Guaipe was one of the few relievers from last season not sent packing, so maybe that's a good sign.