The Heat expects Mario Chalmers to miss two weeks, possibly a bit longer, with a sprained right knee, but team president Pat Riley said Sunday he has no plans to sign another point guard.

If he misses two weeks, Chalmers would be sidelined for seven games. The Heat has 12 regular-season games remaining over 3½ weeks.

Chalmers, who had to be carried to the locker room after he sustained the injury Saturday against Denver, was able to walk without a problem at Sunday's Heat Family Festival. He was wearing a brace on the knee.

"It isn't anything serious," he said. "I'll be re-evaluated in a week. I'll definitely be back by the playoffs and maybe the last couple games of the regular season."

Chalmers said he sustained the injury after Denver's Ty Lawson attempted a jump shot late in the first quarter.

"His leg kicked my knee," he said. "It was very frightening. I didn't know what had happened."

Mike Bibby will replace Chalmers in the starting lineup, and coach Erik Spoelstra said Dwyane Wade and LeBron James "obviously will be handling the ball quite a bit, as they have been, but Mike Miller will handle, too. And Eddie House now will step in and take up some of those minutes."

Riley said "we do feel like we have enough depth to make up for" Chalmers' absence.