Dioner Navarro homered off reliever Wilton Lopez in the eighth inning and the Los Angeles Dodgers beat the Houston Astros 1-0 on Sunday to avoid a three-game sweep. After a scoreless duel between Dodgers starter Hiroki Kuroda and Houston counterpart Bud Norris, Navarro hit a 2-0 pitch from Lopez (1-3) into the pavilion seats in right-center.