Around the horn: Closer Zach Britton (forearm) felt good after his rehab outing at Short-A Delmarva on Thursday, Showalter said. He'll pitch in relief there Saturday again before another outing, Monday for Double-A Bowie. After that comes back-to-back outings, with his final rehab appearance likely at Triple-A Norfolk. … Showalter said there "wasn't a real separator" when deciding to option right-hander Gabriel Ynoa to Norfolk on Thursday to clear a spot for O'Day. Ynoa pitched 2 1/3 innings Thursday and wouldn't have been available Friday and possibly Saturday, while all of Richard Bleier, Miguel Castro and Asher were available to pitch.