HOUSTON, Aug. 3 (UPI) -- Kazuo Matsui hit a two-run homer Monday to pace the Houston Astros to a 4-3 victory over the San Francisco Giants.
Astros starter Mike Hampton (7-8) held the Giants to two runs on eight hits and two walks in six innings.
Jose Valverde allowed a run in the ninth, but earned his 13th save.
San Francisco starter Matt Cain (12-3) took the loss after allowing all four Houston runs in eight innings.
Ryan Garko had two hits, a walk and an RBI and Pablo Sandoval was 3-for-5 with an RBI for the Giants.