DENVER -- The Colorado Rockies' history against Milwaukee starter Matt Garza wasn't recent, but it was robust.

Picking up where they left off, the Rockies pounded Garza on Friday night and beat the Brewers 8-4.

Garza, who last faced the Rockies on June 21, 2015, gave up three homers among the nine hits he allowed and eight runs (seven earned) in 4 1/3 innings.

Charlie Blackmon hit his sixth leadoff homer and the 28th of his career. Gerardo Parra hit his 10th homer in the fifth, and two batters later Carlos Gonzalez hit a two-run homer that gave the Rockies an 8-2 lead and finished Garza's outing. He has failed to pitch six innings in six straight starts.

Garza (6-7) is 2-6 with a 6.90 ERA in eight starts against the Rockies and is 0-4 with a 10.02 ERA in four starts at Coors Field.

"We have a right-hander that we have success (against) in the past," Gonzalez said. "So we want to jump ahead and try to score some runs and give him a rough night. That's exactly what we thought about before the game and then we did it in the game. So it's always good to execute and to get the job done and to win the game."

The win was the fourth in 11 games for the Rockies, who moved one game ahead of Arizona in the National League wild-card race.

The Brewers, whose four-game winning streak ended, fell into fourth place -- 4 1/2 games behind Arizona in the chase for second wild-card spot.

Rockies starter German Marquez (10-5) gave up a career-high three home runs but all came with the bases empty.

After giving up single runs in the third and fourth, Marquez yielded back-to-back homers in the sixth to Keon Broxton and Orlando Arica, both long drives over the fence in center.

Those homers trimmed Colorado's lead to 8-4 and ended Marquez's start after 5 2/3 innings. He gave up seven hits and four runs with one walk and six strikeouts and surrendered a career-high three home runs.

"What was important today is our starting pitcher did a nice job," Rockies manager Bud Black said. "Kept us right there and when we took the lead, he kept us there. The bullpen did a nice job."

Mike Dunn, Jake McGee, Pat Neshek and closer Greg Holland -- Colorado's most reliable late-game relievers -- combined to hold the Brewers scoreless for the final 3 1/3 innings. Holland, who had gone three days without pitching, finished in a non-save situation.

"We like those guys," Black said. "We like their experience. Look at their track record. They've done this over time. So for us to get where we want to be, we have to pitch well. And they pitched well tonight."

Parra extended the Rockies' lead to 6-2 when he led off the fifth with just his second homer since July 17. Garza then struck out Mark Reynolds, who reached first base on a wild pitch thrown on the third strike, and Gonzalez followed with an opposite-field two-run homer that increased the lead to 8-2 and ended Garza's outing.

"I didn't do a great job of keeping it down," Garza said. "(Coors Field) plays small on nice days like this. You pay when you're here, and they get the ball up. That's all it is. It's just missed spots and they took advantage of it."

Brewers third baseman Travis Shaw made a sprawling stop of Trevor Story's hard grounder in the fourth, tried for a forceout but threw wide of second base. Gonzalez, who was on second, continued home to make it 5-2.

Nolan Arenado tripled home two runs in the third. He scored to give the Rockies a 4-2 lead when Parra followed with a single, lining a ball that went off the glove of leaping shortstop Arcia.

Marquez began the inning by hustling a single into a double before Blackmon singled. Both runners scored on Arenado's career-high seventh triple.

Marquez went sliding into second base on his double, giving an anxious moment to Black and pitching coach Steve Foster. Asked about his slide, Marquez smiled and said, "I thought it was terrible, man."

Marquez gave up Domingo Santana's 20th homer in the second, which tied the game at 1. He yielded a run in the third that put Milwaukee ahead 2-1 when Eric Thames led off with a triple and Neil Walker followed with a single. That was the only Brewers' hit in five at-bats with a runner in scoring position against Marquez.

"The thing is he's only 22," Rockies catcher Jonathan Lucroy said. "Good stuff, good arm. And I just think he's going to get better as he learns how to pitch, as he learns how to manage innings, learns how to read swings as he gets more experience. You can't teach 98 (mph) sinkers. And he's very competive, too, and he's very intelligent.

"He knows what he's doing out there, and I think this kid's got a bright future."

NOTES: Rockies RHP Jeff Hoffman and INF Ryan McMahon were optioned to Triple-A Albuquerque and RHP Scott Oberg and OF Mike Tauchman were recalled. ... Rockies RHP Antonio Senzatela will take Hoffman's place in the rotation. ... Rockies 3B Nolan Arenado was in the lineup. He left in the seventh inning Thursday with a bone bruise on his left hand where he was hit with a hard grounder. ... Brewers C Stephen Vogt (left knee sprain) was reinstated and C Andrew Susac (right trapezius strain) was placed on the 10-day disabled list retroactive to Aug. 15. ... The Brewers hit back-to-back homers for the sixth time this season and first time since July 25 at Washington.