Roy Oswalt may have to go on the disabled list, but the Astros aren’t ready to make a decision yet.
Oswalt visited a doctor yesterday. ''He gave me a shot that’s not cortisone, but it’s something like that,’' Oswalt said. ''And he said that to just take it day by day. It may take five days, or it may take 10 days or 15 days. This shot is going to last five to six days, and then we’ll see how it feels.’' If Oswalt is forced to the DL, Pete Munro likely would replace him in the rotation.