Martinez made only one appearance during his brief time with the Red Sox, allowing one run over one inning of relief in Tuesday's loss to the Blue Jays. He's being replaced on the active roster by Alec Gamboa, who was called up from Triple-A Worcester to give the Red Sox a fresh arm in the bullpen.

Boston optioned left-hander Raymond Burgos to Triple-A to clear room for Martinez, who is up with the big club for the first time this season. Over 34 appearances (nine starts) at Worcester, Martinez produced a 5.46 ERA, 1.27 WHIP and 52:20 K:BB in 62.2 innings. He'll be capable of covering multiple innings in Sunday's game against the Athletics as the Red Sox deploy a bullpen day.