DENVER (AP) - Milwaukee Brewers starter Wily Peralta knew trouble was likely Friday night once he had difficulty with his slider.
He had the pitch in the bullpen and in the first inning when he retired the Colorado Rockies in order, striking out the first two batters. Those were the only strikeouts for Peralta (7-10) as the Rockies beat the Brewers 8-3.
``It was a tough outing, man,'' Peralta said.
``A lot of fastballs up in the zone. The starts before I was doing good because I was able to keep the fastball down. So today I don't got my slider, so I just leave a lot of fastballs up in the zone.''
Tyler Chatwood pitched seven strong innings with no walks and hit a two-run double to help the Rockies break out offensively. They had scored three or fewer runs in their past four games, seven of their past nine and 14 of their past 20.
Todd Helton and Nolan Arenado each had two hits and an RBI for the Rockies, who had scored an NL-low 58 runs in their 20 previous games in July.
Chatwood (7-3) allowed two runs and six hits and struck out the side in the first inning, finishing with a career-high 11 strikeouts. He has been especially effective at hitter-friendly Coors Field, going 4-1 with a 3.47 ERA in eight home starts this season.
The Rockies' offense got going against one of the Brewers' top pitchers in recent weeks, Peralta, who entered 3-1 with an 0.87 ERA in his previous six starts.
Peralta allowed eight runs - five earned - and seven hits in 3 2-3 innings as the Rockies batted around during four-run innings in the second and fourth. He walked three and struck out two.
The Rockies loaded the bases in the second when Helton singled around walks to Michael Cuddyer and Wilin Rosario. Arenado followed with an RBI single and Chatwood then lined a double down the third base line. Arenado put the Rockies up 4-0 when he scored on a fielder's choice by D.J. LeMahieu.
``In this ballpark, you open it up when you walk people,'' Brewers manager Ron Roenicke said. ``It's a good hitting ballpark, just like ours is. And when you walk people, you're asking for trouble.''
LeMahieu, Troy Tulowitzki, Cuddyer, and Helton each had run-scoring hits in the fourth. An error by third baseman Yuniesky Betancourt when he failed to complete a force play by missing the bag helped allow the final three runs of the inning.
Carlos Gomez homered off reliever Manuel Corpas in the ninth for the Brewers' final run. The homer was the 17th of the season for Gomez and the 100th overall by the Brewers.
NOTES: Chatwood's previous career high in strikeouts was 10 against Houston on May 29. ... Right-hander Collin McHugh, acquired last month from the New York Mets for Eric Young, will start for the Rockies on Saturday in place of Drew Pomeranz, who was placed on the 15-day disabled list because of left bicep tendinitis. The Brewers will start LHP Tom Gorzelanny (1-4). ... Rockies slugger Carlos Gonzalez, forced to leave Thursday's game against Miami after aggravating the sprained middle finger on his right hand while swinging the bat in the first inning, was held out of the starting lineup. He is day to day. ... RHP Rob Wooten, called up from Triple-A Nashville by the Brewers prior to the game, made his major league debut when he relieved Peralta with two outs in the fourth. He went 2 1-3 innings, allowing two hits with one strikeout.