The Chicago Cubs dismantled the Cincinnati Reds 9-1 on Sunday, September 20, 2026, at Great American Ball Park in a commanding division road win. David Peterson carved through Cincinnati's lineup for six innings, Pete Crow-Armstrong went 3-for-5 with a home run and two RBI, and four other Cubs batters recorded extra-base hits as Chicago's offense erupted for nine runs against a Reds staff that never found its footing. The eight-run margin makes this one of the more one-sided outcomes between these NL Central rivals this season.

David Peterson Controls the Game From the First Pitch

Peterson was the story on the mound. The left-hander worked all six innings, allowing just one earned run on three hits with seven strikeouts and one walk. Cincinnati's only answer was a JJ Bleday solo home run, which was the lone blemish on an otherwise clean afternoon for Peterson, who earned the win. The bullpen finished the job without drama — Caleb Thielbar worked a scoreless seventh, Edward Cabrera handled the eighth, and Colin Rea closed out the ninth, combining for three hitless innings with just one hit allowed across the trio.

Cubs Offense Breaks It Open Early Against Rhett Lowder

Cincinnati starter Rhett Lowder never got comfortable. He lasted just three innings, surrendering five earned runs on six hits with three walks and three strikeouts before the Reds pulled him. By the time Lowder exited, the game was effectively over.

Crow-Armstrong was the standout at the plate, going 3-for-5 with a home run and two RBI. He was the engine of a Chicago lineup that distributed damage across the order. Pedro Ramírez was equally productive, also collecting three hits and driving in two runs in five at-bats. Ian Happ chipped in with two hits and an RBI, while Seiya Suzuki and Michael Conforto each added solo home runs to pad the total.

Cubs Batters Who Drove the Win

  • Pete Crow-Armstrong: 3-for-5, 1 HR, 2 RBI
  • Pedro Ramírez: 3-for-5, 2 RBI
  • Ian Happ: 2-for-5, 1 RBI
  • Seiya Suzuki: 1-for-5, 1 HR, 1 RBI
  • Michael Conforto: 1-for-5, 1 HR, 1 RBI

Turning Point: The Cubs Pile On Before the Third Inning Ends

The turning point came well before the middle innings. Chicago's ability to chase Lowder in three frames — loading up six hits and three walks against him — meant the Reds were burning through their bullpen by the fourth inning. Carson Spiers followed Lowder and worked four innings, but gave up four more earned runs on five hits with five strikeouts. The damage was already done. Cincinnati had no realistic path back into a game where the Cubs were scoring in bunches and Peterson was limiting Reds hitters to weak contact.

What's Next for the Cubs

Chicago continues its road schedule following this Sunday win. The Cubs head into the final stretch of the 2026 regular season with a performance that checked every box — starting pitching, bullpen depth, and an offense that spread the production across five different contributors. The series result keeps the Cubs relevant in the NL Central conversation as September winds toward its conclusion.