Calder Trophy-winning defenseman Matthew Schaefer has been all over Long Island since the New York Islanders selected him first overall at the 2025 NHL Draft. 

One place he hadn't been: Madison Square Garden for a New York Knicks game. 

That changed on Wednesday night, when Schaefer took in Game 4 of the NBA Finals. 

New York supporting New York 🍎

No. 1 pick and Calder Trophy winner Matthew Schaefer is in the house rooting for the Knicks in Game 4.@NYIslanders | @nyknickspic.twitter.com/61LP2fYkGf

— The Athletic NHL (@TheAthleticNHL) June 10, 2026

The Knicks rallied from down 29 points to beat the San Antonio Spurs 107-106 and take a commanding 3-1 series lead. 

OG Anunoby crashed the paint before his rebound attempt off a Jalen Brunson miss went in with just 1.2 seconds to play in regulation.

THE PLAY THAT PUT THE KNICKS UP 3-1. pic.twitter.com/l4c1ZCRnNC

— NEW YORK KNICKS (@nyknicks) June 11, 2026

Schaefer was on hand for what was the greatest comeback win we've ever seen.

Now the Knicks are on the verge of their first championship win since 1973.