Klay Thompson scored a game-high 27 points and Kevin Durant chipped in with 24 on Saturday afternoon as the Golden State Warriors opened defense of their NBA title with a 113-92 victory over the San Antonio Spurs in Game 1 of their best-of-seven first-round Western Conference series in Oakland, Calif. Durant had 11 points in the first quarter and surprise starter JaVale McGee gave Golden State an unexpected lift with nine points, helping the Warriors, the second seed in the Western Conference, take command from the start en route to as many as an 18-point lead in the first half. Down 57-41 at halftime, the Spurs used two hoops by Rudy Gay early in the third period to get within 59-50.