The Warriors on Saturday had their first summer league game, and fell short to the Spurs, 63-61, in a tight one in Las Vegas.
Warriors guard Keifer Sykes finished with a team-high 15 points.
Golden State's 2016 second-round pick, Patrick McCaw out of UNLV, stood out in his first showing, capping the night with 14 points, two assists and four rebounds.
He had 11 first-half points.
Royce Oneale contributed nine points in just over 25 minutes of play. David Laury followed Oneale up with eight points.
Darion Atkins, Ognjen Kuzmic and Thomas Walkup chipped in two points each, with Atkins tying Laury with a team-high eight rebounds.