Jalen Brunson blinked— and somehow the Knicks held on

SAN ANTONIO — Captain Clutch was crumbling.It felt like eons since Jalen Brunson had looked so cold in such a big moment, missing open shots he could normally hit with his eyes closed. The Knicks superstar had made seven shots. He’d missed 18, the last coming on a go-ahead attempt from the elbow with 15 seconds left, giving the Spurs a chance to hold for the final shot of regulation in a tie game.But Victor Wembanyama threw a pass off Stephon Castle’s back and Brunson scooped u