Monroe, Knight lead Pistons over Bobcats 105-99
Walker led all scorers with 24 points but had five turnovers.
Sessions had 18 points and eight assists off the bench for the Bobcats and Byron Mullens added 15 points.
The Bobcats cut the Pistons' 11-point lead to one late in the fourth quarter before Monroe scored on a spin move inside. Calderon put away the game with a pair of free throws with 21 seconds left after Mullens missed a jumper and Walker turned the ball over at the top of the key.
The Pistons were coming off a 14-point loss to the Memphis Grizzlies on Tuesday night, a defeat that coach Lawrence Frank called "a real stinker."
He felt better about this one, calling it a "gritty win."
"It was a good result," Frank said. "We got off to a good start, which always helps. We executed well down the stretch. Showing our execution down the stretch. Our patience, our poise and playing through a little bit of adversity."
The Bobcats entered the fourth quarter down 78-77 but the Pistons quickly built a double-digit lead after Kyle Singler scored off an offensive rebound with seven minutes left in the game.
The Bobcats clawed back behind a pair of 3-pointers from Mullens and two nasty dunks by rookie Michael Kidd-Gilchrist but couldn't seize the lead.
Charlotte dropped to 7-20 at home and 13-41 overall.
"Our biggest problem was defensively, we weren't able to get stops," Walker said. "We missed a lot of rotations and weren't talking to each other. We weren't in sync tonight. We've got to get that back."
Detroit hasn't looked sharp on the road, carrying a 6-18 record into the game. But the Pistons looked good early, jumping out to an 11-point first-quarter lead behind 11 points from Knight and three 3-pointers from Calderon.
Rodney Stuckey added 12 points and tied a season-high with seven rebounds off the bench for the Pistons.
NOTES: Carolina Panthers wide receiver Steve Smith took in Wednesday night's game. ... Tyrus Thomas, one of Charlotte's highest-paid players, was inactive for the fourth straight game. ... Walker has now topped 20 points in a game 18 times this season. ... Monroe tied a career high with three blocks.
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