The Red Sox have designated left-hander Tommy Layne and utilityman Michael Martinez for assignment in order to clear spots on the roster for newly acquired southpaw Fernando Abad and newly promoted outfield prospect Andrew Benintendi, as MLB.com’s Ian Browne and Tim Britton of the Providence Journal first noted (links to Twitter).
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Layne, 31, has a 3.77 ERA with 7.9 K/9, 4.4 BB/9 and a 53.2 percent ground-ball rate in 28 2/3 innings out of the Boston bullpen this season. He posted fairly similar numbers in 2015, but the key difference between the two seasons is his performance against left-handed opponents. Last year, Layne was unhittable in such situations, limiting left-handed hitters to a comical .148/.248/.170 slash in 102 plate appearances. This year, though, lefties batted .259/.355/.333 against him, thus prompting the Sox to look outside the organization for an improvement, which they found by flipping hard-throwing relief prospect Pat Light to the Twins in exchange for Abad.
Martinez, meanwhile, scarcely saw playing time during his brief tenure with the Red Sox. He appeared in just four games and totaled seven plate appearances, going 1-for-6 with a walk and two strikeouts. The 33-year-old is a career .198/.244/.271 hitter in parts of six big league seasons (542 plate appearances). He has experience all over the diamond, having spent time in the outfield and at second base, third base and, to a lesser extent, shortstop.