The Orioles bullpen, which had been showing signs of cohesion, suddenly came apart while one strike away from a win.
After right-hander Miguel Castro, left-hander Richard Bleier and right-hander Mychal givens combined for three one-hit innings, Brad Brach came into the game with a one-run lead.
The right-hander got the first two outs in the ninth, but walked Tampa Bay pinch-hitter Shane Peterson. Brach committed a balk, threw a wild pitch, and with two strikes on shortstop Adeiny Hechevarria, allowed a game-tying single.
Sidearmer Darren O’Day allowed a three-run home run to Tampa Bay outfielder Steven Souza in the 10th as the Orioles lost to the Rays, 6-4, before 24,398 at Oriole Park June 30.
