It's a Thursday afternoon in McKale Center, and two members of the Arizona men's basketball team are running through post drills with an assistant coach and a team manager.

The coach yells out orders as he feeds the ball into the post, occasionally stopping the drill to criticize the players for incorrect form or not following their shots.

"Keep it at the chin, Isaiah!"

While the two players involved - Fox and fellow big man Channing Frye - should be used to these drills by now, it's something new for the coach.

A couple of weeks ago, it would have been Jay John feeding the post. But he's now the head coach at Oregon State, meaning Josh Pastner, perhaps the most famous undergraduate assistant/video coordinator in the history of college basketball, is now the one working with Frye and Fox on their post fundamentals.

It's an interesting change for Pastner, who has spent much of his time on Lute Olson's coaching staff working with guards and small forwards on their jumpers. It's also a change for the players, who go from John's old-school, stoic attitude to the gregarious Pastner, who leaves basketball-themed inspirational messages on his answering machine.

"It's going to be a change, personality-wise," Frye said. "I think we've added someone who's very eager. Josh is a good person for the job. He's so enthusiastic, it just makes us happy to play."

Pastner said he thinks the changeover won't be a problem because the players know him.

"It would be different if I wasn't in the program," he said. "The guys know me. They know what I'm about."

John was not only the primary big-man coach, but he was also one of the lead recruiters. He was instrumental in landing Jason Gardner and this year's top pickup, guard Hassan Adams. But the hallmark of a consistently successful program is its ability to bounce back, something Pastner attributes to Olson's leadership.

"Lute Olson, that's the bottom line. He knows how to delegate. He got it down to an exact science. The whole staff could leave tomorrow, and the program would still be at a high level," he said.

While everyone in the program is probably happy with the news that Jason Gardner will be returning for his senior season, his staying means Arizona will have to contend with a loaded backcourt next season.

In addition to the returning Gardner, sophomores Salim Stoudamire and Will Bynum will compete with newcomers Adams and Chris Rodgers for basically one spot on the court, as Gardner averages over 35 minutes a game and seniors Luke Walton and Rick Anderson will take up most of the minutes at the forward spot.

Pastner said there will be one key to making sure no one complains about playing time.

"When you win, everyone stays happy. We just have to do a good job of coaching," he said.

However, there remains the chance things could get dicey. Bynum didn't always seem content with limited minutes last season when it was just he and Stoudamire vying for time. Furthermore, both Adams and Rodgers are highly touted recruits, so Olson's ability to keep all his players happy will be put to the test.