Jalen Brunson has found his shot in the fourth quarter of each game of this Eastern Conference semifinal series.

Nonetheless, he has faced challenges during the first three quarters. This issue persisted in the Celtics’ 115-93 victory over the Knicks in Game 3, cutting their series advantage by half.

Brunson finished with a team-high 27 points, but eight of those came over the final 12 minutes after the result was well in hand.

During Game 2, he contributed nine points in the last 4:39, securing the game-winning free throws with just 12.7 seconds left. Additionally, he made 11 points in the fourth quarter of the first game.

In the first three quarters across all three games, Brunson is shooting 36.5 percent from the field.

Throughout the series, his performance is modestly better at 38.1 percent, a drop from his 43.6 percent shooting against the Pistons in the initial round. However, this won’t shake his self-assurance.

“Continue to shoot my shot, do the things I work on, continue to stay confident, that’s the biggest thing,” he said. “Just trust what I do. That’s basically it right there.”

Rebounding has been a postseason-long issue for the Knicks.

They have lost the battle on the boards in six of nine games.

While they did outrebound the Celtics by one Saturday, Boston still had 12 offensive rebounds that turned into 18 second-chance points, 14 of those coming in the lopsided first half.

Celtics reserve forward Sam Hauser (sprained right ankle) remained out. He also missed Game 2.

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Al Horford started for Boston in place of Kristaps Porzingis for a second straight game and was terrific.

The 38-year-old forward enjoyed his best performance of the series, producing 15 points, nine rebounds and two blocks in 35 strong minutes.

The Celtics improved to 3-1 on the road in the playoffs after going an NBA-best 33-8 during the regular season away from home.