Celtics guard Marcus Smart suffered a torn left oblique on his left side and could be out for the first two rounds of the playoffs, a league source told ESPN's Adrian Wojnarowski.

Celtics guard Marcus Smart suffered a torn left oblique and will be out for 4-6 weeks before he can resume basketball activities, a timeline that could keep him out until the start of the NBA Finals.

Celtics guard Marcus Smart suffered a left oblique strain during Boston's loss to Orlando on Sunday night, a source told ESPN's Adrian Wojnarowski. Forward Jayson Tatum left the game for good after just six minutes due to a bruised shin.