Jaylen Brown credited the adrenaline of the game after somehow managing to top-score despite having a hand injury as the Boston Celtics started their NBA playoff first-round series against the Atlanta Hawks with a win.

Brown cut his right hand last week when he smashed a glass vase at his home, but he was able to play on Saturday.

Despite having had stitches following the injury, Brown's cut split open again against the Hawks, and he had to leave the court at TD Garden after just eight minutes to have his bandage changed.

However, he returned to ultimately play 37 minutes and score 29 points as the Celtics won 112-99, with 45 points in the second quarter.

Brown insisted the laceration between his fingers was "fine now", although he is still working out the best way to manage the issue.

"I think it's going to be alright," he said. "It's a constant adjustment, making sure I have a good grip on the ball.

"There's not a lot of padding on it, so it's just a different feel shooting the ball. [The pain] is fine. Especially with the adrenaline of the game, you kind of just get going."

Celtics forward Jayson Tatum, who scored 25 points, said of his team-mate: "He came out aggressive. He looked like he looked fine and played really well."