Purdue's Johnson, Moore stay together with Celts

Both are 22 years old — Johnson was born 17 days before Moore in 1989 — and their maturity was one factor that impressed the Celtics.

"They've played in a lot of big games in a lot of hostile environments and they've been ranked very high at times of their college career and been the ones that have been expected to win," Ainge said. "So they've been through a lot and I think that that can only help as they're getting ready for the NBA."

They may have to prepare for a while without coach Doc Rivers and his staff. The current collective bargaining agreement is set to expire at the end of Thursday with a lockout possible after that.

"I'm not too concerned," Johnson said, "Pretty much you can only focus on the things we can control and that's really, right now, just working out and continue to get better as a player."

In high school, Johnson, Moore and Robbie Hummel, a native of Valparaiso, Ind., discussed going to Purdue together. Hummel will be entering his senior year.

Johnson and Moore were so good as seniors that they have a shot to remain teammates in the NBA.

But Ainge said it was just a coincidence that he drafted two players from the same college.

"How ironic it was," Moore said. "What's the chances of that happening?"