Peralta got knocked around for almost his entire outing, which lasted just three innings after he was unable to record an out against the first three batters in the fourth. He ultimately allowed a season-high-tying seven earned runs as the Brewers fell 10-1 at SunTrust Park.
Contact was the problem for Peralta. He gave up a season-high seven hits including four doubles, all of which came on the fastball, and the Braves only swung and missed at two of his 62 fastballs on the night. He also struck out a season-low three batters and walked five, his second highest total this season.
While it seems like the fastball was the problem for Peralta, he said that he had trouble finding his secondary pitches, off of which he normally throws his fastball.
"Usually I can throw [my secondary pitches] for strikes, get ahead and then I can throw the fastball through and get some swings and misses," Peralta said. "Today I wasn't able to get ahead, I was working behind in the count a lot, and they were just kind of sitting on pitches."
Familiarity could have been a problem for Peralta as well. The rookie hasn't seen too many teams multiple times, but this was his second meeting with Atlanta. On July 6, Peralta held the Braves to one run over six innings with six strikeouts.
"He just faced Colorado for the second time and pitched well," Brewers manager Craig Counsell said. "It was more to me the action on the pitches kind of wasn't quite what we've been seeing. The swings kind of told you that."
On the other side of things, the Brewers' offense couldn't find the same kind of answer for Braves starter Kevin Gausman. After the Brewers mounted a small threat in each of the first two innings, including a two-out double from Mike Moustakas in the first and two singles in the second, the Milwaukee offense went silent.
Gausman retired 12 straight Brewers from the end of the second through the beginning of the sixth including four of his eight strikeouts on the evening. Gausman finished the evening allowing just one run on six hits over eight innings.
"I thought we had some good swings the first time through the lineup," Counsell said. "As the game went on, his split-finger [fastball] got going pretty good, and he just threw a ton of strikes. He threw quality strikes, so we found ourselves behind in the count most of the night."
The Brewers' lone run off Gausman came in the sixth after Moustakas doubled with two outs and Jesus Aguilar drove him in with a single.
MOMENT THAT MATTERED While the Brewers' pitching took a beating, there was one positive in the debut of Jordan Lyles. Lyles, acquired from San Diego in a waiver claim Sunday, threw 2 1/3 innings, allowing three runs on three hits with three strikeouts. While that line doesn't pop off the page, Lyles escaped a first-and-third situation in relief of Peralta in the fourth by allowing just one run on a sac fly as he retired the first six batters he faced. All three of Lyles' runs came in his third inning of work after he racked up 43 pitches. He hasn't thrown more than 25 pitches since his month-long DL stint for right elbow inflammation that ended July 29.
"I thought Jordan pitched well," Counsell said. "He pitched well to get out of the jam. Maybe he got a little tired at the end of the third inning there, but [Lyles and Adrian Houser] did a nice job to get us through the game and just use two guys."
SOUND SMART Aguilar's sixth-inning RBI put him in the Brewers record books. In smashing Gausman's 2-2 fastball, Aguilar drove in his 51st two-strike run this season, which breaks a franchise record previously set by Prince Fielder in 2009.
UP NEXT Wade Miley takes the mound for the Brewers on Saturday at SunTrust Park, trying to tame a Braves lineup that has slugged .455 against left-handed pitching this season, the second best mark in the National League. Miley has, however, held Atlanta's hitters to a .622 OPS in 45 career at-bats. Julio Teheran will take the mound for Atlanta. First pitch is at 6:10 p.m. CT.
Cody Pace is a contributor to MLB.com based in Atlanta.