The Rockies want to see what veteran Roy Oswalt has left. To that end the 36-year-old right-hander will pitch in a middle relief role in Sunday's game against the Padres. He will enter the game behind starter Chad Bettis.

"I'm up to about 70 75 pitches but I'd like to get that stretched out. But I'm feeling good now. I'm eager to get out there" said Oswalt who came off the disabled list Friday.

Oswalt has been inactive since injuring his left hamstring July 7 at Arizona.

"We're trying to build Roy back up to make a few starts before the end of the season" manager Walt Weiss said. "I'd like to get a good look at him before the end of the season. We feel like he could help us. He's missed a lot of time but we still like him enough to watch him pitch the rest of the year."
Oswalt struggled in his four previous starts going 0-4 with a 7.64 ERA. He pitched 5 ⅔ scoreless innings in a Tuesday rehab start for the Rockies' rookie team in Grand Junction scattering three hits walking one and striking out two.