The Milwaukee Brewers host the Seattle Mariners on Thursday, August 20, 2026, at American Family Field for a 2:10 PM ET first pitch. Robert Gasser gets the ball for Milwaukee, squaring off against Seattle right-hander George Kirby in what shapes up as a pitching-forward afternoon matchup. With the regular season in its late stages, every game carries weight in the standings, and the Brewers will be leaning on their home crowd to help set the tone against a Mariners lineup that features some legitimate offensive firepower.

Pitching Matchup: Robert Gasser vs. George Kirby

Gasser gets the start for the Brewers, and this is a chance for the young left-hander to show what he can do against a Seattle club that has real threats up and down the order. Kirby, meanwhile, is one of the better arms in the American League — a command-heavy pitcher who limits walks and generates weak contact. Milwaukee hitters will need to be disciplined and make him work deep into counts rather than fishing at his signature off-speed offerings early.

Brewers Lineup: Key Players to Watch

• Jackson Chourio (LF, No. 2): Batting second, Chourio is one of Milwaukee's most dynamic young hitters. His ability to make contact and use his speed puts pressure on opposing pitchers from the jump.
• Christian Yelich (DH, No. 5): Slotted at designated hitter and hitting fifth, Yelich remains central to the Brewers' offensive identity. His at-bats against a premium starter like Kirby will be worth watching closely.
• Brice Turang (2B, No. 1): Leading off, Turang sets the table. His on-base ability early in games can put Milwaukee in advantageous positions before Kirby settles in.

Mariners Lineup: Threats Milwaukee Must Contain

• Julio Rodríguez (CF, No. 4): Batting cleanup, Rodríguez is Seattle's most dangerous hitter. Gasser cannot afford to let J-Rod get comfortable with fastballs in the zone.
• Randy Arozarena (LF, No. 2): A proven run-producer with postseason pedigree, Arozarena hitting second gives Seattle a credible threat before the middle of the order even arrives.
• Josh Naylor (1B, No. 5): A powerful left-handed bat protecting Rodríguez in the lineup, Naylor is the kind of hitter who can do serious damage if Milwaukee's bullpen isn't sharp late.

Keys to the Game

• Gasser needs to keep the ball down and work efficiently through the first three innings before the Mariners can time his stuff. Pitch count management is critical against a lineup this deep.
• Milwaukee's bottom third — Garrett Mitchell, David Hamilton, and Luis Lara — will need to contribute. Kirby can cruise if the Brewers surrender easy outs at the bottom of the order.
• The Brewers bullpen, not Gasser, may ultimately decide this one. If Milwaukee can hand a lead to the late-inning relievers, keeping Rodríguez and Naylor off base becomes the decisive factor.

Prediction

This game has the feel of a low-scoring grind. Kirby is a tough draw at home, but American Family Field afternoon crowds have a way of energizing this lineup at the right moments. Yelich and Chourio getting to Kirby early is the scenario Milwaukee needs. Expect a tight game decided by the bullpens — give the edge to the Brewers, 3-2, in a game that goes down to the final out. Catch it on WTMJ 620 locally or on Brewers.TV Presented by Potawatomi Sportsbook.