Mark Reynolds hit a two-run home run Wednesday night to help the Orioles break out the brooms, their first three-game sweep of the Athletics in Baltimore since 1998. ... The Orioles don't know why Markakis has scuffled this season, but they don't believe an injury is what's hampering him. ... Dan Klein, one of the Orioles' top pitching prospects, is scheduled to have a precautionary MRI of his right shoulder. ... Kentucky Derby winner Animal Kingdom was made a 2-1 morning-line favorite for the Belmont Stakes after he drew the No. 9 stall in the post position draw.