The Seattle Mariners wrap up their Sunday home schedule on August 23, 2026, hosting the Chicago Cubs at T-Mobile Park for a 4:10 p.m. ET first pitch. Right-hander Bryce Miller gets the ball for Seattle opposite Cubs left-hander Shota Imanaga in what shapes up as a genuine pitching showcase. Interleague games at home carry extra weight in the regular season standings race, and with both clubs sending quality arms to the mound, this one has the makings of a low-scoring, tightly contested afternoon in the Pacific Northwest.
Pitching Matchup: Bryce Miller vs. Shota Imanaga
Bryce Miller has developed into one of the more reliable arms in Seattle's rotation. He works off a sharp four-seam fastball and commands it well enough to attack hitters early in counts, which keeps his pitch totals manageable and gives the bullpen a break. When Miller is sharp, he generates weak contact and stays out of big innings — exactly what you want from a number-two or number-three starter.
Shota Imanaga arrives as one of the more intriguing pitchers in the National League. The Japanese left-hander operates with elite command and a deceptive delivery that gives hitters fits regardless of handedness. He locates his pitches to both edges of the zone and changes speeds effectively, which makes him genuinely difficult to square up. Seattle's lineup will need patience and a willingness to grind deep into counts to have any success against him.
Keys to Watch for the Mariners
- Miller's command early: If Miller establishes his fastball in the first two innings, he can control the tempo of the game and keep the Cubs' contact-oriented offense off balance.
- Handling Imanaga's arsenal: Seattle's hitters will need to lay off the borderline pitches Imanaga consistently earns called strikes on. Plate discipline is the difference-maker against a pitcher this precise.
- Bullpen depth: In a tight pitching duel, the team that manages its relievers more effectively late will likely take the win. Both clubs will lean on their pens if this game stays close through six.
- Home-field energy: T-Mobile Park crowds have shown up when the team gives them something to root for. A strong Miller outing early keeps the ballpark engaged and puts pressure on the Cubs.
Game Prediction
This is a matchup that rewards quality pitching, and both starters are capable of delivering it. Imanaga's command is a legitimate challenge for any lineup, but Miller at home in Seattle is a different animal than he is on the road. Look for a game that stays within one or two runs deep into the seventh inning before the bullpens take over.
The Mariners take this one, 3-2. Miller goes six innings, limits Chicago to two runs, and Seattle's offense scratches out just enough against Imanaga to make it hold up. Catch the action on Mariners.TV or listen locally on Seattle Sports 710 AM.
