Los Angeles Dodgers' Joc Pederson (31) celebrates his two-run home run against the Arizona Diamondbacks with Josh Reddick (11) during the fourth inning of a baseball game Saturday, Sept. 17, 2016, in Phoenix. (AP Photo/Ross D. Franklin)
PHOENIX (AP) Rookie Brock Stewart pitched five effective innings and the Dodgers bullpen took over from there Saturday night as the NL West leaders beat the Arizona Diamondbacks 6-2.
The Dodgers started the day with a four-game division lead over San Francisco.
Joc Pederson hit a two-run homer, his seventh in 13 games against Arizona this season. He lined a 3-2 pitch from Shelby Miller (2-12) over the pool in right field at Chase Field in a three-run fourth.
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Stewart (2-2) beat the Diamondbacks on Sept. 7 at Dodger Stadium for his first big league win. He earned another victory, giving up two runs and five while striking out six and walking one.
Five Los Angeles relievers shut out the Diamondbacks on one hit over four innings.
Corey Seager tripled and scored on Justin Turner's sacrifice fly in the Dodgers first.
Jean Segura homered in the bottom half to tie it. He has three leadoff homers in the past five games and 17 on the season.
With two on and none out in the fourth, Diamondbacks catcher Welington Castillo retrieved a pitch that got away and tried to throw out Adrian Gonzalez at third, but the toss sailed into left field and let a run score.
Pederson followed with his 23rd home run of the season.
Chase Utley doubled twice for the Dodgers.
Miller allowed four runs on seven hits in 5 1/3 innings and hasn't won in the majors since June 20.
Castillo homered in the fourth. The Diamondbacks almost scored more, but Dodgers left fielder Andrew Toles threw out Yasmany Tomas at the plate.
The Diamondbacks brought up catcher Oscar Hernandez from Double-A Mobile before the game. He had gone home to Venezuela after his minor league season ended.
Dodgers: Closer Kenley Jansen was dealing with some inflammation in his right wrist, but still struck out three in the ninth. … C Yasmani Grandal got the day off due to sore right elbow, which manager Dave Roberts said has bothered him for some time. … LHP Brett Anderson, who has been on the disabled list with a blister on his left index finger, is scheduled to be activated when the team returns to Los Angeles after this weekend.
Diamondbacks: Pitcher Rubby De La Rosa might not be shut down from major league games for the rest of the season. Manager Chip Hale said De La Rosa needs to show good velocity in simulated games before he can return. … OF A.J. Pollock, out with a groin injury for the past week, could return to action in the final week of the season when the team is in Washington. Arizona's last road series is Sept. 26-29 at the Nationals.
Dodgers: RHP Jose De Leon (2-0) is set for the third start of his major league career. He has 12 strikeouts and two walks in his first two starts.
Diamondbacks: RHP Robbie Ray (8-13) faces the Dodgers Sunday. He's 3-3 in seven career starts against LA.