Milwaukee Bucks star Damian Lillard exited in the first quarter of Sunday night's Game 4 against the Indiana Pacers because of a left lower leg injury.
Lillard is scheduled to undergo an MRI on Monday, when the Bucks are expected to know the severity of the injury, league sources told ESPN's Shams Charania.
Lillard was injured while trying to help secure an offensive rebound midway through the first quarter. After tapping the ball away from a Pacers player, Lillard fell to the ground and grabbed his left leg, remaining down for the next defensive possession.