First pitch: 9:38 p.m. ET
Venue: Angel Stadium, Anaheim, California
Probable starters: LHP Kade Anderson (Mariners, 1-1, 4.29 ERA, 1.38 WHIP, 16 SO in 21.0 IP) vs. LHP Reid Detmers (Angels, 5-8, 3.32 ERA, 1.04 WHIP, 191 SO in 168.0 IP)
TV: SEAM / ABTV (and streaming options)
This is Game 1 of a three-game series. Both clubs are well out of contention (Mariners third in the AL West; Angels last and trying to avoid 100 losses). The focus is on evaluation and finishing the season strongly.
Weather Forecast
Pleasant Southern California evening conditions. Temperature around 74–81°F at first pitch (high near 81–84°F), cooling into the mid-60s overnight. Partly cloudy to becoming sunny earlier in the day, with south winds around 5–10 mph. No significant precipitation expected. Ideal weather for baseball at Angel Stadium.
Injury Reports
Mariners
Brendan Donovan (INF): 7-day IL (head/concussion)
Emerson Hancock (SP): 15-day IL (groin)
Cole Wilcox (RP): 15-day IL (oblique)
Longer-term (mostly 60-day): Brennen Davis, Will Wilson, Matt Brash, Luke Raley, and others.
Angels
Nolan Schanuel (1B): 10-day IL (side)
Sam Bachman (RP): 15-day IL (forearm)
George Klassen (SP): 15-day IL (back)
Longer-term (mostly 60-day): Yoán Moncada, Gustavo Campero, Jack Kochanowicz, Anthony Rendon, and others.
Both teams are dealing with depth issues in the infield, outfield, and pitching staff.
Current Rosters / Projected Approaches
Mariners: Lineup features Randy Arozarena (recently hot with multi-HR games), Julio Rodríguez, Cal Raleigh, Josh Naylor, and supporting pieces. Rookie lefty Anderson is making an early career start and showed improvement in his last outing.
Angels: Expect Zach Neto (strong power numbers), Mike Trout, and others filling gaps. Detmers has been excellent of late (majors-best stretch ERA in recent starts) with elite strikeout numbers and a strong WHIP.
Key Player vs. Player Matchups
Anderson vs. Angels hitters: Limited big-league sample for the young lefty. He will need to navigate Neto’s power and the Angels’ lefty-on-lefty dynamics carefully.
Detmers vs. Mariners hitters: Detmers owns a strong overall profile and recent dominance. Arozarena and Rodríguez represent the primary threats; Detmers has shown the ability to miss bats and limit hard contact.
Recent Team Forms
Mariners: 3-2 in last 5; roughly 4-6 in last 10. Offense has been more productive recently (.275 BA in last 10 in some reports); pitching mixed. Road record 30-45.
Angels: 2-3 in last 5; 3-7 in last 10. Coming off a three-game losing streak. Offense has struggled (.214 BA in last 10); pitching has been better of late in spots. Home record 30-44.
Series History
This is the seventh meeting of the 2026 season. Mariners lead the season series 4-2. Matchups have been competitive, with several low-scoring games.
Betting Trends
Trends slightly favor the Mariners due to the season-series lead and overall record, though Detmers’ recent form keeps the Angels competitive as home underdogs.
Game Odds
Seattle Mariners – 107
Los Angeles Angels 7.5
Odds Courtesy of Sports Odds Direct as of Sunday, September 13, 2026
