David Peterson earned a victory in his Chicago Cubs debut on Saturday, June 27, 2026, helping defeat the Milwaukee Brewers 8-2 at American Family Field.
The left-hander, recently acquired from the New York Mets, allowed two runs across 5 2/3 innings as Chicago overcame pitching injuries to secure the win.
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Peterson threw 69 pitches, allowing five hits, striking out two, and walking none.
Despite a leadoff home run by Milwaukee's Jackson Chourio, Peterson settled down until Sal Frelick tied the game with an RBI single in the fifth inning.
Chicago's offense responded in the sixth with a go-ahead RBI single from Nico Hoerner and a three-run home run by Ian Happ, his 17th of the season.
Seiya Suzuki also contributed a two-run homer in the fourth inning, marking his second consecutive game with a home run.
The Cubs acquired Peterson after starting pitchers Edward Cabrera and Ben Brown were placed on the injured list.
Reliever Phil Maton was also sidelined with right knee tendinitis.
According to advanced metrics highlighted by Bleed Cubbie Blue, Peterson entered the game with a 6.09 ERA but possessed a 3.53 Field Independent Pitching (FIP) rating as a starter this season, signaling potential for improvement behind an elite Cubs infield defense.
Peterson Adjusts to New Team
Peterson explained the logistical challenges of his sudden trade from New York.
"A lot of: This is going to Chicago, this is going home.
