Boston Celtics at New York Knicks

Knicks take a 3-1 lead over the Celtics with a 121-113 victory as Tatum is injured in final minutes

The specifics of Tatum’s injury are uncertain but the situation in the Eastern Conference semifinals is clear.

The Knicks need one more victory to reach the conference finals for the first time in 25 years. The Celtics need to match the biggest comeback in NBA history to extend their title reign.

Brunson had 39 points and 12 assists, and the Knicks pushed the defending champions to the brink of elimination with a 121-113 victory Monday night in Game 4.

Blown out in Game 3, the Knicks dominated the second half to become the first home team to win in this series.

“I think it was a sense of urgency, desperation, just knowing that we have a great opportunity,” Brunson said.

The Celtics will have to make the NBA’s 14th comeback from a 3-1 deficit and may have to do it without Tatum, who was carried off the court with a right leg injury with 2:58 left.

Mikal Bridges and Karl-Anthony Towns each added 23 points and OG Anunoby bounced back from two poor performances by scoring 20 for the Knicks, who can win the series Wednesday night at Boston. If not, they would come back to Madison Square Garden to try to do it Friday night.

“We have to turn that page quickly and do our first job, which is win on Wednesday. That's the mindset,” Celtics veteran Al Horford said. “As a group, we just have to rally together because obviously we’ve lost our leader, the guy that gets us going.”

Tatum scored 42 points, his high in these playoffs, before he was hurt when the Celtics turned the ball over and his leg gave out as he tried to lunge forward toward the loose ball.

Nobody has come from 3-1 down since Denver did it twice in 2020 at the Walt Disney World resort. It hasn't happened when a team had to win a true road game since Cleveland rallied past Golden State in the 2016 NBA Finals.

After leading by at least 20 points in the first three games — but blowing the first two of them in Boston — the Celtics had another double-digit lead less than five minutes into this game and were up 62-51 at halftime.

Brunson then scored 18 in a desperate third quarter, when the Knicks played their starters the entire way and outscored the Celtics 37-23 to set up a thrilling final period.

“Just keep fighting,” Bridges said. “We were down way worse before.”

Tatum’s three-point play tied it for the final time at 102-all before Anunoby hit a 3-pointer and the Knicks later put it away for good with an 11-0 burst that made it 116-104.

Derrick White made six 3-pointers and scored 23 points for the Celtics. Jaylen Brown had 20.

Regular Season Series

BOS wins series 4-0