Former Duke star Jayson Tatum is coming into his own as an NBA player.

On Sunday afternoon, Tatum turned in an astonishing performance as his Boston Celtics beat the Brooklyn Nets in Game 1 of their first-round series.

The big moment came in the final seconds as Tatum’s layup gave the Celtics the win as the buzzer sounded. It was a great cut from Tatum, who caught a pass from Marcus Smart and then spun past fellow ex-Duke star Kyrie Irving.

Here’s the play:

Tatum finished with 31 points, 4 rebounds and 8 assists. He also played excellent defense on Kevin Durant, forcing a miss on Brooklyn’s final possession.

Boston now has a 1-0 lead over Brooklyn in the first round. The Celtics are favored to win the series, but the Nets’ star power of Durant and Irving could come into play. Irving finished this game with 39 points, 5 rebounds and 6 assists.

Game 2 is on Wednesday night at 7:00 p.m. ET in Boston.