Iman Shumpert, the other starting guard, is listed as day to day with a bruised left knee.
Felton has been bothered by the hamstring for much of the season and the Knicks finally decided to shut him down Wednesday. He had an MRI exam Thursday to confirm the injury.
Shumpert was hurt during the Knicks' 83-78 victory over Chicago on Wednesday when he banged knees during a collision on the court.