The Oakland Athletics made a pair of roster moves ahead of their series-opening contest against the Texas Rangers on Monday: optioning struggling left-hander Jesús Luzardo to the minors and purchasing the contract of righty Domingo Acevedo. With due respect to Acevedo, Luzardo's demotion is the more notable of the transactions.

Luzardo, 23, had been expected to serve as one of the main members of Oakland's rotation. Alas, that hasn't come to fruition. Luzardo posted a 5.79 ERA and allowed 45 baserunners in 28 innings over six starts before fracturing his hand playing a video game. 

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When Luzardo returned, about four weeks later, the A's moved him to the bullpen. His results haven't improved; instead, he's allowed more than a run (11) per inning pitched (10) over seven appearances. Luzardo has also yielded at least one home run in each of his last five outings.