Nick Allen homered twice and had three RBIs, Shea Langeliers put Oakland ahead with a two-run single in the sixth inning and the Athletics rallied to beat the San Francisco Giants 8-6 on Sunday. Limited to eight runs over their previous eight games, the last-place A's outlasted Giants All-Star Alex Cobb and then broke through with three runs in the sixth. Oakland earned its second consecutive victory in the annual Bay Bridge series after losing the first two matchups in San Francisco this year.