LAS VEGAS -- Prior to Boston's summer league bout with the Sacramento Kings on Thursday, Celtics coach Doc Rivers spoke with reporters and gave updates on Avery Bradley, who recently underwent surgeries on each of his shoulders, and Paul Pierce, who battled a sprained left MCL throughout the 2012 postseason.

Rivers, who often detaches himself from injury-related news, hasn't been briefed in detail yet on Bradley's rehab, and is taking the "no news is good news" approach.

"[The doctors] say good, but I have yet to hear doctors say 'bad' or that it was a bad surgery," Rivers said of Bradley's progress. "But I think he's doing great."

Rivers acknowledged that Bradley's work ethic will help to speed up the recovery process, but the coach maintained the team won't rush him back. It's still unclear exactly when Bradley will be ready to play again, but a return could come as far as two months into the season.

"Avery's a worker," Rivers said. "I think rehab is as hard as the guy wants to work, so his rehab should be going great.

"I mean, Avery's great, but we're not going to have him for a while, so it's going be great to know that we're getting him back at some point. But we're not going to rush him, and that's going to be really important, that he not rush himself."

The news is decidedly better for Pierce, who Rivers said is doing just fine thanks to some needed rest this offseason.

"His knee will be fine. His injury was he had to rest it," Rivers said of Pierce. "He should not have been playing to get healthy. The only way you get healthy with his knee is rest, so he'll be fine."

Last summer's NBA lockout made it difficult for players to get into the necessary shape heading into the season, but without any such obstacles this year, Rivers expects his veterans to enter training camp in peak physical condition.

"I think it's easy for all of the players next year, at least ours, they know exactly the day of training camp, where last year, with the lockout, no one knew," Rivers explained. "It was a guess. So, I think, especially the veterans, they know exactly how to plan their summer and plan their summer of conditioning."