-- Sidney Ponson threw a bullpen session on Tuesday and reported pain in his right calf, which landed him on the disabled list on Aug. 9. As a result, Baltimore interim manager Sam Perlozzo said it's unlikely Ponson will come off the disabled list when he is eligible on Aug. 24.

"I doubt he would be able to come off after the 15 days and then come back into the rotation," Perlozzo said.

The Orioles are fortunate they have two days off in the next week, which negates the need for a fifth starter. Perlozzo said he would not tinker with Rodrigo Lopez, Erik Bedard and Bruce Chen's schedules. They will all pitch on normal rest, meaning Bedard will pitch on Friday, Lopez on Saturday and Chen on Sunday.

"They've been the most consistent," Perlozzo said. "That gives us the best chance to win. They should be fine. They haven't been abused."

Daniel Cabrera will pitch on Aug. 23 on five days' rest. Perlozzo said he isn't certain Ponson will rejoin the rotation when he finally is activated.

With John Maine having pitched well on Sunday, the Orioles might consider putting Ponson in the bullpen to help him get back in shape.

Committee on Hold for Palmeiro

The House Government Reform Committee said it likely will need another week to review paperwork related to Rafael Palmeiro's positive steroid test in order to determine if he committed perjury when he told Congress in March he had never used steroids. The committee declined to comment until the investigation concludes. . . .

Monday's 6-2 win against the Oakland A's was Baltimore's first in 11 games at McAfee Coliseum.

"I had no idea," Perlozzo said. "We've pretty much been getting beat up here."