With a minute left in the third quarter, Pacers guard George Hill controlled the ball. David West set a screen, and Felton came off the screen awkwardly. He bumped into Hill, who had stepped toward the basket at the top of the key, and Felton appeared to turn his left ankle trying to gain his footing and get back on the ball.
Felton hobbled around during the next dead ball with 55.6 seconds to play -- West was shooting free throws -- and Felton came out of the game. Jason Kidd replaced him.
On the previous possession, Felton had stolen the ball and thrown a transition alley-oop off the backboard to Kenyon Martin.
Felton's status to return is unclear. The Knicks led 72-66 at the end of the third quarter.