The Red Sox announced that they've traded right-hander Sandy Rosario to the Athletics in exchange for cash or a player to be named. The move comes little more than a month after the Sox claimed the reliever on waivers from the Marlins. The trade with the A's was set in motion when the Sox designated Rosario for assignment in order to clear a spot on the 40-man roster while protecting some of their minor leaguers from the Rule 5 draft.
Rosario, 27, is a 6-foor-1, athletic reliever with a 93-97 mph fastball that has explosive late life in the strike zone. In 7 2/3 big league innings, he's allowed 13 runs while striking out four and walking three. However, he's been a consistent strike thrower in the minors, compiling 319 strikeouts and 73 walks in 310 minor league innings. He spent most of 2012 in Triple-A New Orleans, forging a 1.04 ERA with 24 strikeouts and just two walks in 26 innings -- and both of the walks were intentional.
He also features a hard changeup and a slider, both or which are inconsistent but that flash plus potential. Rosario has one option remaining.
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