Jim Johnson gave up two in the ninth, and the Orioles lost to the Cleveland Indians 4-3.
Dan Duquette said the Orioles tried the conservative approach on Dylan Bundy, and when it didn't work, Tommy John surgery was the option.
Wei-Yin Chen will start on Saturday for Bowie in a rehab start. He could face Bryce Harper, who may be playing for Harrisburg.
Miguel Gonzalez had Tommy John surgery in 2009, and he thinks Dylan Bundy will do fine in his rehab.