Paul Blackburn and five relievers combined on a three-hitter, making Chad Pinder's leadoff homer stand up for the Oakland Athletics in a 1-0 victory over San Francisco that ended the Giants' five-game winning streak Wednesday night. The right-hander pitched around traffic, inducing three double-play grounders in the first three innings — including a difficult 3-6-1 turn to end the third after the Giants had loaded the bases. Domingo Acevedo, Sam Moll, Zach Jackson and Kirby Snead combined for three scoreless innings.