The Seattle Mariners close out their regular season home schedule with a Friday night matchup against the Los Angeles Angels at T-Mobile Park. First pitch is set for 10:10 PM ET on September 25, 2026, with right-hander Bryce Miller taking the mound for Seattle against left-hander Reid Detmers. With the calendar flipping toward the final days of the regular season, every game carries weight — and this one gives Miller a chance to make a statement heading into the stretch run.

Probable Pitchers: Bryce Miller vs. Reid Detmers

Bryce Miller has been one of the more intriguing arms in the Mariners rotation since breaking into the majors. The right-hander relies on a sharp, riding fastball that generates consistent weak contact and swing-and-miss up in the zone. A late-September home start is exactly the kind of stage a young starter needs to step into and deliver. Miller will need to be crisp with his command — the Angels may be out of playoff contention at this stage, but a lineup with something to play for individually can still put up crooked numbers against a pitcher who loses the zone.

Opposing him is Reid Detmers, a left-hander the Angels have invested in as a long-term rotation piece. Detmers works off a deceptive delivery and mixes his offerings enough to keep right-handed lineups uncomfortable. Seattle's hitters will need to stay disciplined early in counts and work Detmers deep into his pitch totals to keep the Angels' bullpen active.

Three Keys to Watch in Seattle

• Miller's first-inning command: Miller's outings tend to follow the tone he sets early. If he's locating his fastball at the letters and keeping the Angels off-balance with his secondary stuff, this could be a gem. If he falls behind hitters early, the Angels have enough athleticism to make him work.
• Seattle's approach against a left-hander: Detmers will likely neutralize any left-handed bats in the Seattle lineup. Watch how manager Scott Servais constructs the order and whether the Mariners can get right-handed bats into favorable counts against Detmers's breaking ball.
• Late-inning bullpen management: In a September game where roster construction is fluid and rosters are expanded, both sides have options out of the bullpen. How each club manages those arms in the middle and late innings could determine the final score as much as the starters.

Prediction

T-Mobile Park should provide a good environment for Miller to end the home slate on a strong note. The Angels are a club that can generate offense in spurts, but Seattle's home crowd and Miller's stuff give the Mariners the edge here. Look for Miller to go six solid innings, the offense to scratch across enough runs against Detmers, and Seattle to take this one in a 4-2 final. Mariners win.

Catch the game on Mariners.TV or listen on Seattle Sports 710 AM. Spanish-language coverage is available on KWKW 1330 and Mariners ES Radio.