Houston Chronicle: Oswalt returns to Houston, will miss another start

Astros righthander Roy Oswalt flew to Houston this morning to have his ailing left hip examined and will miss his next scheduled start Tuesday. Brandon Backe will start in his place.

Oswalt, who left Monday’s game with a strained left hip abductor, saw back specialist Dr. Mike McCann in Houston and will rejoin the team Sunday in Atlanta. He will throw off flat ground Monday and throw a bullpen session Tuesday before being re-evaluated.
...
Oswalt would only be able to make one start before the All-Star break, but the Astros would put him on the disabled list if they have any doubts about his health. “We’re not going to do anything to put him in jeopardy,” Wade said.
...
Oswalt is 7-8 with a 4.60 ERA in 18 starts this year.