In the classic 1994 comedy film, Jim Carrey puts on a mask that gives him special powers. In the 2023 NBA playoffs, Jaylen Brown seemingly had the same effect after removing his.

With nine minutes left in the second period, and having only scored two points, Brown emerged from a timeout without the protective mask he has worn since fracturing his cheekbone in February.

He went on to finish with 31 points as the Boston Celtics beat the Atlanta Hawks 129-121 at State Farm Arena to go 3-1 up in their Eastern Conference first-round series.

"I was talking to [Marcus] Smart when JB took his mask off and was like, 'Oh, s***. It's go time,'" Celtics guard Jayson Tatum said, who also put up 31 points. "I knew he was going to turn it up a notch."

Brown had scored just one from seven field-goal attempts prior to taking off his mask, going on to net 11 from 15 after that.

"Maybe it was all in my head, but I just needed a different look," Brown said. "As soon as I took it off, things started to turn around a little bit."

It was an astonishing turn in form from Brown, who is averaging 23.3 points per game in the playoffs so far.

"I've just started getting comfortable with it since I've been wearing it," he added about the mask. "When I first put it on, I didn't like it too much, and I had to wear it.

"I just needed something different [on Sunday]. I don't know what it was: Change my shoes, wipe my hands off, take the mask off, whatever it is I needed to do, I needed to do to help our team get a win, and that's what I was trying to do."

The Celtics can clinch the series in Game 5 when they return to TD Garden on Tuesday.