The Boston Celtics have now clinched a playoff spot in the Eastern Conference after getting their 43rd win of the season.
Jayson Tatum led the green and white with his 30-point outing to nip the Indiana Pacers, 114-111.
However, it was the banker of Marcus Smart who sealed the deal for Boston after allowing their 17-point advantage disappeared.
He finished with 16 markers as Gordon Hayward had a double-double of 27 points and 10 rebounds.
Meanwhile, Domantas Sabonis led the short comeback of the Pacers with his 28 points as Victor Oladipo added 27 chips.