Spurs costs the Warriors their playoff seeding by winning on a Harrison Barnes’ 3-pointer buzzer beater. Barnes, a former Warriors, made the 3-pointer with just 3 seconds left in the game. "20 POINTS FOR THE FORMER WARRIOR." HB CALLS GAME IN THE BAY 🔥 https://t.co/nM6PmQ561S pic.twitter.com/pSbZPzCk7L — NBA (@NBA) April 10, 2025 Harrison Barnes scored 20 points, making 6 of 9 three-pointers, while Stephon Castle and Keldon Johnson both scored 21 points, and a combined…