BALTIMORE -- With each day, it seems the news on Athletics right-hander Justin Duchscherer gets a little brighter.

Manager Bob Geren said Wednesday that Duchscherer threw a side session Tuesday, and is scheduled to pitch Thursday in a rehab start in Arizona. Geren said Duchscherer will throw around 60 pitches, five more than he threw in his most recent rehab start on Monday. A date on when Duchscherer will return to the rotation remains in limbo, however.

"I wouldn't go that far yet," Geren said before Wednesday's game. "We just want to get him out there -- hopefully everything will go well, and we'll decide after that. I think the second start is crucial. The first start, he's probably feeling a little sore, this and that."

Duchscherer underwent elbow surgery in March and has spent the entire 2009 season trying to regain the strength in his pitching arm.

Meanwhile, fellow pitcher Dallas Braden is still working on nursing an infection on his left foot. According to Geren, Braden is coming along in his progress, but it is taking a little longer than he and his pitcher would like.

"He's progressing, slowly," Geren said. "But he is progressing. Each day, he's being evaluated. He did a long toss [Tuesday] and it went OK. It didn't go as well as he'd like, but it didn't go terrible. Just kind of average."

Geren also said there is no word on when Braden would throw a side session. Braden hasn't pitched since July 31 in Toronto.

Daric Barton, who was put on the disabled list on July 28 with a strained left hamstring, is busy rehabbing his injury and, according to Oakland assistant general manager David Forst, "should be in a game tomorrow in Arizona."