Josh Donaldson homered and doubled twice to back another solid start by Jesse Chavez, and the Oakland Athletics beat the Houston Astros 4-1 on Sunday to complete a series sweep. Oakland Athletics' Josh Donaldson celebrates his first-inning two-run homer during a baseball game against the Houston Astros in Oakland, Calif. on Sunday, April 20, 2014. Oakland Athletics' Josh Reddick climbs the wall chasing after Houston Astros' Marwin Gonzalez's solo homer in the fourth inning of a baseball gmae in Oakland, Calif.