Pregame: Rondo, Walker out; Hump returns

BOSTON -- Both the Boston Celtics and Charlotte Bobcats will be without their starting point guards for Friday's tilt at TD Garden.

Rajon Rondo was a late scratch for Boston with a bruised left shin and will be replaced in the starting lineup by rookie Phil Pressey. Kemba Walker is out for Charlotte with a groin injury and Luke Ridnour starts in his place.

Rondo was scheduled to play Friday and, sticking to his plan of resting on the second night of back-to-backs this season while returning from ACL surgery, sit out Saturday's visit to Cleveland. Depending on his shin injury, Rondo could be back in play for Saturday's game.

The Celtics will get a body back on Friday as Kris Humphries returns in a reserve role after missing the last two games due to knee tendinitis. The Celtics took another MRI of Humphries' ailing knee on Wednesday, but found no structural damage.

"It’s the tendinitis, and that was good," said Celtics coach Brad Stevens. "We were a little bit concerned there may be more to it because he’s played through that for quite a while. But, no, it looked structurally really good and I think he feels good about it. You could tell, even though we went pretty light as far as shootaround this morning, he had a little bit of an extra bounce in his step."