Reds sent 3B Ke’Bryan Hayes (back) on a rehab assignment to High-A Dayton.

Hayes will probably need at least until the All-Star break to get ready to go, at which point it seems likely that the Reds might part ways with Matt McLain from a deep infield mix. Edwin Arroyo has just a .257/.309/.297 line he’s posted in his first 82 plate appearances, but the Reds have seemingly committed to him at second base.