The Orioles have released lefty reliever Jamie Walker. Walker pitched in 22 games (0 starts) for the Orioles this season and he was 0-0 with a 5.11 ERA and a 1.54 WHIP. The Orioles have recalled lefty reliever Alberto Castillo to replace Walker in the bullpen. He has pitched in 24 games (0 starts) in AAA-ball this season and he is 1-0 with a 3.09 ERA and a 1.24 WHIP. Castillo pitched in 28 games (0 starts) for the Orioles last season and he was 1-0 with a 3.81 ERA and a 1.42 WHIP. This is a win-win situation as Walker should have no problem getting a new job and Castillo should do a decent job for the Orioles.