Danny Ainge said Marcus Smart is a player who needs to "take steps forward" this season.
Celtics coach Brad Stevens mentioned Terry Rozier, Marcus Smart, Gerald Green, Jaylen Brown as those vying for Evan Turner's minutes.
Marcus Smart has been putting time in this summer working to improve his jump shot as well as his playmaking abilities.
Marcus Smart scored 13 points with seven rebounds, one assist, four steals and three turnovers in 35 minutes against the Hawks on Thursday.
Marcus Smart scored 10 points on 2-of-7 shooting in Game 5 on Tuesday, adding two boards, two assists, one steal and two 3-pointers in 25 minutes.
After the Celtics tied their first-round series up at 2-2, Brad Stevens gushed about Marcus Smart's play in Game 4.
Marcus Smart came up huge in 42 minutes off the bench on Sunday, finishing a thrilling overtime victory with 20 points, eight rebounds, five assists, three 3-pointers and two steals.
Marcus Smart made 3-of-6 from the field for 11 points with three rebounds, five assists, two blocks and two 3-pointers in 33 minutes against the Hawks on Friday.
Marcus Smart and Jared Sullinger will move to the bench on Friday against the Hawks.
Marcus Smart (ribs) is expected to practice on Thursday.
Marcus Smart (bruised rib) said that he plans to play in Game 3 vs. the Hawks on Friday.
Marcus Smart (finger) will move into the starting lineup for Game 2 against the Hawks on Tuesday, with Avery Bradley (hamstring) unavailable.
Marcus Smart (finger) returned to practice on Monday.
Marcus Smart sat out of practice on Sunday due to a bruised knuckle.