Kristaps Porzingis exited Thursday night's 115-105 win over the Detroit Pistons because of soreness in his right knee.
Porzingis had missed the previous three games due to a sprained left ankle.
"We'll hope for the best," Rick Carlisle said, noting that Porzingis seemed to be walking fine after the game. "We'll hope that it's not any kind of a serious issue and go from there."
Porzingis had surgery in October to address the lateral meniscus injury in his right knee that he suffered during the playoff