Golden State Warriors star Kevin Durant faces an indefinite injury layoff after spraining a knee ligament but could return before the end of the regular season, the NBA team said Wednesday. Durant hobbled off the court during the Warriors' defeat to the Washington Wizards on Tuesday after a collision with team-mate Zaza Pachulia. "It has been determined that Durant suffered a grade 2 medial collateral ligament sprain and a tibial bone bruise," the Warriors said following a scan.