Darren O'Day underwent two sets of tests on his hand and elbow on Thursday. O'Day has been dealing with soreness on his right hand, so doctors are trying to determine whether he's dealing with a vascular, structural, or nerve issue. He's not traveling with the team to Toronto and it's not clear when he might be back. It's a tough break for the Orioles, as the 30-year-old has a 2.28 ERA and 57/14 K/BB ratio over 59 1/3 innings this season.