Boston Celtics guard Marcus Smart will undergo surgery Friday to repair a torn ligament in his thumb, league sources told ESPN's Adrian Wojnarowski.
There is hope that Smart can return in six weeks, sources said, which would mean he'd be available for the Eastern Conference playoffs. His timetable for a return will be clearer after the surgery.
Smart suffered what the team termed a sprained right thumb while diving to the floor during the first half of a loss to the Indiana Pacers on Sunday. He downplayed the severity of his injury after Sunday's game, but initial tests Monday showed more worrisome damage to the thumb, forcing Smart to examine his options.