May 13, 2009 3:58 PM EST

Tom Glavine had another successful bullpen session on Wednesday, and could return to the mound for the Braves by the end of the month.

He threw 33-35 pitches with bullpen coach Eddie Perez standing in as a batter.

"The key is going to be first and foremost: Am I having pain when I make pitches that doesn't allow me to make my pitches? So far, I haven't had that," Glavine said. "The second part of that is going to be, you know, do I get sore, so sore in between starts that, you know, I can't do anything or I'm not sure whether or not I'm going to make my next start?"

He paused, and then answered his own question.

"So far, both of those have been good."

Via ESPN