The Seattle Mariners host the Los Angeles Angels at T-Mobile Park on Friday, September 25, 2026, with first pitch scheduled for 10:10 PM ET. Bryce Miller gets the ball for Seattle opposite Angels left-hander Reid Detmers in a late-season regular season matchup. With the calendar winding toward the final days of 2026, every game carries weight, and the Mariners will look to protect their home turf in front of the T-Mobile Park faithful.

Pitching Matchup: Bryce Miller vs. Reid Detmers

Bryce Miller has been one of the more watchable arms in the Seattle rotation. The right-hander generates elite bat-missing stuff and works with the kind of conviction you want from a young pitcher who knows his identity on the mound. Tonight he draws a real test in a late-September spot start situation where the pressure of the moment can either sharpen or expose a pitcher.

Reid Detmers counters for the Angels. The left-hander has the arsenal to give lineups trouble when he is locating his fastball and working his secondary pitches effectively. Seattle's lineup will need to stay disciplined early and not chase.

Seattle Mariners Starting Lineup

• Randy Arozarena — DH
• Dominic Canzone — RF
• Julio Rodríguez — CF
• Josh Naylor — 1B
• Michael Arroyo — LF
• Cole Young — 2B
• Jhonny Pereda — C
• Weston Wilson — 3B
• Leo Rivas — SS

Keys to Watch

Julio Rodríguez in the Three Hole

J-Rod hitting third is where he belongs. The center fielder is the engine of this offense, and how he performs against Detmers — a left-hander capable of generating weak contact — will go a long way toward determining Seattle's run output tonight.

Josh Naylor Protecting the Middle of the Order

Naylor at cleanup gives the lineup genuine protection behind Rodríguez. If Detmers decides to pitch around J-Rod, Naylor is the guy who has to make the Angels pay. His at-bats in the middle innings could be the difference in a close game.

Cole Young and the Bottom of the Order

Young at second base and Leo Rivas hitting ninth give the Mariners two potential table-setters who can flip the order back to the top. If Seattle is going to string together multi-run innings against Detmers, it likely runs through getting something out of the six-through-nine spots.

Miller's Command Early

Bryce Miller at his best is a strike-thrower who makes hitters earn everything. If he gets ahead in counts early, this Angels lineup is going to have a long night. If he falls behind and has to navigate from behind in counts, it gets more complicated. Watch his first-inning execution as a barometer for how the game will unfold.

Prediction

This feels like a game that stays close into the sixth or seventh inning. Detmers is capable enough to keep Seattle from blowing the game open early, and Miller is capable enough to match him. The Mariners' lineup depth — even without a confirmed Angels lineup to measure against — suggests Seattle should find a way to manufacture enough runs. Give the edge to the home side. Mariners win, 3-2.