Castillo said he got the call following the Tides' Saturday night game in Buffalo, N.Y., and was excited to be back for his second stint with the big league club.
"I like where I am at, pitching-wise," Castillo said. "I'm very happy with where I'm at."
Unfortunately, that didn't translate in his first outing. In uniform and ready to go for Sunday's rubber match against Cleveland, Castillo entered the game in place of reliever Matt Albers. He recorded the last out of the eighth inning, gettting Shin-Soo Choo to hit into a double play, but surrendered a two-run homer to Russell Branyan in the ninth to give the Indians a commanding five-run lead. The Orioles went on to lose, 5-1.
Manager Dave Trembley said the decision to bring up Castillo was part of a lefty-for-lefty swap given that long reliever Mark Hendrickson made Sunday's spot start in place of the injured David Hernandez. The addition of Castillo gives the Orioles bullpen depth and adds another southpaw to go with Will Ohman.
Castillo was 1-0 with a 5.40 ERA in six games for Baltimore before being optioned May 6 to make room for Koji Uehara. After returning to Norfolk, Castillo tossed three scoreless outings, spanning 3 1/3 innings.