Roy Oswalt expected to return

ARLINGTON, Texas -- Texas Rangers pitcher Roy Oswalt and manager Ron Washington said the veteran right-hander is expected to make his next start after receiving an anti-inflammatory injection in his back.

Oswalt said he plans on throwing a bullpen session on Friday and then take the ball Sunday against the Chicago White Sox.

The veteran said the shot, administered Monday by Dr. Mike McCann in Houston, was designed to help him with inflammation around the facet joint in his lower back. He's seen McCann for four or five years and said he's received injections from time to time to help with back issues.

Oswalt believes his back ailment won't linger and that he will help the club down the stretch.

"I feel confident that I got it early," Oswalt said. "That's one thing when you get older -- you don't try to do too much."

Oswalt said he felt a "twinge" during his last bullpen session and decided to shut it down rather than take any chances. He was working on his mechanics in that bullpen and felt good about his progress.

Oswalt's health is of even more importance to the club one day after it was announced that Colby Lewis is out for the year with a torn flexor tendon in his elbow.

"With (Oswalt's) experience, we could certainly use the innings we know he can give us," Washington said.

Oswalt praised the club's pitching depth as Scott Feldman, who filled in for him on Monday, allowed one run in seven innings of a 9-1 win over the Boston Red Sox. Feldman earned another start thanks to that performance and is slated to get the ball next Monday against the Los Angeles Angels.

Oswalt, who made his Rangers debut last month, is 3-1 with a 5.22 ERA in five starts.