Arroyo was placed on the 10-day disabled list Monday with a right shoulder strain.

This move comes on the heels of Arroyo's loss to the Dodgers on Sunday, after which he admitted that his bothersome shoulder had him contemplating retirement. The 40-year-old has struggled so far this season, compiling a 7.35 ERA and 1.60 WHIP through 71 innings. He'll head to the disabled list to allow his shoulder to fully recover before ultimately making a decision about his future with the Reds. Ariel Hernandez was recalled from Double-A Pensacola in a corresponding move to fortify the bullpen, but it's not immediately clear who will replace Arroyo in the rotation for his next scheduled turn Friday against the Nationals.

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