Shields struggled through five innings as he walked a season-high six batters before the Padres bullpen turned a close game into a rout. Justin Ruggiano and Adrian Gonzalez hit two-run homers and Chase Utley added a solo shot in a five-run sixth inning as the Los Angeles Dodgers hit five homers in an 8-4 win over San Diego on Friday night. Carl Crawford and rookie Scott Schebler added solo home runs as the Dodgers increased their NL West lead to a season-high 7 1/2 games over San Francisco, which lost 2-1 at Colorado. The walks drove up Shields' pitch count to 107 and prompted Padres interim manager Pat Murphy to pinch hit for his pitcher in the fifth. Mike Bolsinger (6-3), who spent August with Triple-A Oklahoma City, allowed just two hits in five innings, but they were both home runs. Padres pinch-hitter Brett Wallace hit a solo homer in the eighth as the teams tied the Petco Park record for combined home runs in one game with eight. RHP Brandon Maurer (right shoulder inflammation) suffered a setback in his rehabilitation and has stopped throwing.