Roy Oswalt is unhappy with his demotion to the Rangers' bullpen, saying "I'm not really a bullpen guy." "Well, I mean we're 4-2 in the games I started. I guess I should've been 6-0," Oswalt said. "Two bad ones and won four of them so... I don't know. We'll see how it goes." It's not surprising that Oswalt is unhappy having to move to the pen, but he held a 6.49 ERA in his six starts, so he's not really in a position to complain. He did throw two scoreless innings in his first relief appearance Thursday. "Becoming a valuable piece is going to have to be part of his mentality and how he wants to handle that," manager Ron Washington said.