The Red Sox have designated infielder Sean Coyle for assignment, the team announced. His roster spot will go to utilityman Michael Martinez, whose acquisition is now official.
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Coyle, 24, was originally a third-round selection in the 2010 draft. He had shown plenty of promise in the 2013-14 campaigns, when he posted .800+ OPS batting lines with double-digit home runs at High-A and then Double-A.
Things haven’t progressed quite as well since, however. Following a tough 2015 season, Coyle has posted a meager .165/.263/.280 slash over 250 plate appearances this year while splitting his time between the Double-A and Triple-A levels.