The Kings fell to the Warriors 80-66 on Monday, losing their second game of the 2013 NBA Summer League and dropping to 0-2.
Sacramento led 12-11 after the first quarter, but was outscored 29-16 in the second and never recovered.
Second-round draft pick Ray McCallum led all scorers with 23 points on 7-for-10 shooting. He also collected an impressive six steals and has proven to be the leader on the Summer League roster.
"Ray played a great game today," Warriors forward Draymond Green said. "He ran his team -- a great floor general. He's doing a great job of running that team."
Green scored a team-high 18 points on a 5-for-9 shooting night for the Warriors, connecting on all eight of his free throws.
Kings' first-round pick Ben McLemore was second in team scoring and the only other King with double digits, adding 14, but he hasn't found his stroke from the field yet. In two games so far, he is 8-for-35 (.228) from the field, including 2-for-18 (.111) from distance.
[REWIND: McLemore struggles in Kings summer league opener]
The Kings face the Toronto Raptors Tuesday at 3 p.m. at COX Pavilion.