OG Anunoby does it all in Knicks victory: ‘Monster’ game.

It was only fitting that OG Anunoby’s reverse dunk put the icing on the cake.

On opening night, the Knicks’ quietest player had the biggest impact.

That dunk — with 34.7 seconds left in the game — gave the Knicks a 10-point lead that nearly everyone closed Their 119-111 win over the Cavaliers At Madison Square Garden. Anunoby scored the final four points for the Knicks.

Those four points meant he passed Jalen Brunson on the night, finishing with a team-high 24 points on 9-for-17 shooting from the field and 4-for-9 shooting from 3-point range.

But his impact went far beyond his offensive production.

Before the season, he announced his long-term intentions to win Defensive Player of the Year and be named to the All-Defensive First Team.

He felt overlooked with both of them in the past. The season began standing by his words.

“OG was a monster,” coach Mike Brown said. “He was our defensive player of the game. I think he had six or seven deflections. He guarded a lot of different guys, so he saw a lot of different types of players tonight. He did a great job.”

“Playing with OG and knowing that he’s guarding the sideline of the ball, that he could take the ball away from somebody, it’s crazy,” Mikal Bridges said. “He has that talent.”

Anunoby also dominated the glass, recording 14 rebounds. He matched career highs.

After being told that Brown called him a “monster,” his reaction was predictably subdued.

“I’m just trying to play hard,” Anunoby said. “Do everything to help the team win.”

Brown’s offensive system is designed to ease the burden on Brunson and help engage perimeter scorers for the Knicks. When Brunson missed time last year, Anunoby often shouldered the scoring burden. But when Brunson was healthy, Anunoby would freeze up at times.

Wednesday was a promising sign of his sustained involvement on the offensive side.

“The game will tell you what to do,” Anunoby said. “Every game will be different, but as we get more comfortable, things will get better.”