SAN DIEGO — James Shields didn't want to sound like he was complaining, but he wasn't pleased.
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.
Although Shields got no decision after leaving with the game tied at 3-all, he was unhappy when asked about the walks.
"You can go through with each pitch and kind of analyze the pitches," Shields said. "I made quality pitches that all weren't called strikes. I was getting behind in the count and walking guys. That's definitely unusual."
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.
With injuries in the bullpen, Murphy called upon Marcos Mateo, Marc Rzepczynski and Jon Edwards against whom the Dodgers exploded for three homers and five runs in the sixth.
"It's easy to point to right now when you have your sixth and seventh-inning guys out," Murphy said. "It's hard to replace."
Los Angeles, which has won nine of 11, leads the NL with 162 home runs.
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. Matt Kemp hit a two-run homer in the first and Jedd Gyorko had a solo home run in the third.
Bolsinger struck out six and walked two in his first start since July 29.
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.
Mateo (1-1), who faced two batters to start the sixth inning, took the loss.
Dodgers rookie Corey Seager followed his successful major league debut with two more hits and an RBI. Seager had two hits and two RBIs in his first game on Thursday night.
In the sixth, Murphy countered left-handed pinch-hitter Andre Ethier with the left-handed Rzepczynski. Dodgers manager Don Mattingly called back Ethier for the recently acquired Ruggiano, who hammered Rzepczynski's second pitch over the center field wall to give the Dodgers a 5-3 lead.
Jimmy Rollins singled, and after a strikeout, Gonzalez connected off Rzepczynski for his 26th home run. Utley then homered off Edwards to right to push the lead to 8-3.
KEMP BY THE NUMBERS
Kemp hit his 200th career homer in the first inning. He also extended his career-long on-base streak to 24 games.
GONZO VS. PADRES
Gonzalez, the San Diego native, continues to hit well against his former team. Gonzalez is hitting .345 with seven home runs and 16 RBIs against the Padres in 14 games.
Dodgers: Mattingly said it may be difficult for RF Yasiel Puig (strained right hamstring) to return before the end of the regular season.
Padres: Wil Myers (left wrist tendinitis), who missed 98 games this season, was activated off the DL and started at 1B. ... RHP Brandon Maurer (right shoulder inflammation) suffered a setback in his rehabilitation and has stopped throwing.
Dodgers: LHP Alex Wood (9-9, 3.67 ERA) goes against the Padres. He has pitched much better on the road this season, going 6-5 with a 3.17 ERA in 17 starts compared to 3-4 and 4.67 ERA in nine home starts.
Padres: RHP Tyson Ross (10-9, 3.27) is coming off one of his best starts of the season, a seven-inning, three-hit outing in a 7-0 win over Texas.