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Not that it was needed, but there is mounting evidence that Michigan coach Jim Harbaugh is a different sort of coach.

Former 49ers tight end Delanie Walker told The Tennessean in a story published Thursday that Harbaugh "still thinks he's a player, not a coach" and even dressed in full uniform and practiced one day with the 49ers, where he coached four seasons.

"He dressed up in full gear and practiced the whole practice — pads, helmets, everything on. He had the whole uniform on," Walker told the Tennesseean. "We came out and said, 'Who is that dude out there?' And it was Jim Harbaugh. He had some old high-top cleats on. He did pretty good. He just couldn't throw the deep, deep pass."

Walker was asked about Harbaugh taking off his shirt and playing with campers during a satellite camp stop at Prattville, Ala.

"It didn't surprise me one bit," Walker said. "Harbaugh doesn't surprise anyone. He does whatever he feels like doing."

Harbaugh, a former Michigan quarterback, will coach his first game at Michigan on Sept. 3 at Utah.

"I think he is going to be great (at Michigan)," Walker told the paper. "People buy into his philosophy. Every team he has ever been on has been good, right? So you tell me what he is going to do. Young kids love to have a coach who is crazy."