Nets center Brook Lopez rolled his right ankle in the third quarter of a 104-101 victory in Charlotte on Sunday night.
He did not return to the game, and he left the locker room on crutches.
New Jersey Nets
Nets coach Avery Johnson said Lopez had an X-ray and will be re-evaluated on Monday.
Lopez made his season debut on Feb. 19 after missing the Nets' first 32 games while recovering from a broken right foot.
"It's a tough situation for him, especially coming back from the foot situation," Johnson said Sunday. "We're going to get him checked out tomorrow."
Lopez is reportedly expected to travel to Miami for Tuesday night’s game against the Heat.
He scored 38 points in a victory at Dallas on Feb. 28, and 28 in a loss at Boston on Friday.
Information from The Associated Press was used in this report.