The Seattle Mariners head to Fenway Park to face the Boston Red Sox on September 1, 2026. First pitch is set for 6:45 p.m. ET. Here’s everything you need — start time, where to watch, how both teams are doing, and who’s starting.
Game Info
- Matchup: Seattle Mariners vs. Boston Red Sox
- League: MLB
- Date: September 1, 2026
- First Pitch: 6:45 p.m. ET · 6:45 p.m. Venezuela · 6:45 p.m. Dominican Republic · 4:45 p.m. Mexico City
- Venue: Fenway Park, Boston
Where to Watch
🇲🇽 Mexico — 4:45 p.m. (CDMX)
- Canal 5 — 55 regular-season games; part of the 2026–2028 broadcast deal
- NU9VE (Canal 9) — Sunday game of the week
- ESPN — Approximately 6 games per week
- TUDN
- Canal FOX — 5-game weekly package: Tuesdays, Thursdays, Fridays and two Saturdays
- Disney+ — 6 additional games per week + ESPN simulcast
🇻🇪 Venezuela — 6:45 p.m. (Caracas)
- Televén (free) — Mainly weekends; free streaming on their mobile app
- 1BASEBALL — 24-hour baseball channel, up to 3 games per day; available via Simple, Inter and NetUno GO
- ByM SPORT — 6 days a week via Inter and Simple
- IVC — Tuesday through Sunday
- ESPN — Live and replays
- Disney+
🇩🇴 Dominican Republic — 6:45 p.m. (Santo Domingo)
- Teleantillas Canal 10 (free) — 7 games per week, one per day, free. Seventh consecutive year. Covers Opening Day through the full World Series, including the Futures Game, Home Run Derby, All-Star Game and the entire postseason
- ESPN
- 1BASEBALL — Via Altice
- FOX / FS1 / FS2 / FOX Deportes
- teleantillas.com.do (free)
- MLB.TV
🇵🇷 Puerto Rico — 6:45 p.m. (ET)
- WAPA Deportes (free) — Regular season (typically Fridays, Saturdays and Sundays); exclusive island broadcast of the All-Star Game and Home Run Derby
- MLB.TV
🇺🇸 United States (Spanish-language)
- Telemundo — Carried Opening Day; 25 featured games in 2026 via Telemundo Deportes
- UniMás / TUDN — MLB En Vivo (Tuesdays, 9 p.m. ET) and MLB Esta Semana (Saturdays, 3 p.m. ET)
- Universo — Sunday Night Baseball in Spanish
- FOX Deportes — Regular season + Spanish simulcast of the FOX postseason: Division Series, Championship Series and World Series
- ESPN Deportes — ESPN retained Spanish-language rights for its 30-game linear package
- Peacock — Sunday Night Baseball in Spanish
Local Team Broadcasts
- Seattle Mariners: Mariners.TV · over-the-air on KING 5 · direct streaming at MARINERS.TV · available without local blackout inside the MLB app
- Boston Red Sox: NESN · direct streaming on NESN 360
A Note on MLB.TV
MLB.TV remains an out-of-market product. For 22 of 30 clubs, there is a separate local in-market subscription sold inside the MLB app (roughly $19.99/month or $99.99/season) that is free of local blackouts. Games that air exclusively on national partners — Netflix, NBC/Peacock, Apple TV, FOX, ESPN — are not on MLB.TV; that’s not a blackout, they simply aren’t part of the package. No public MLB.TV blackout map exists for Latin American countries, so availability may vary.
How Both Teams Are Doing
- Seattle Mariners: 64-74 (.464)
- Boston Red Sox: 75-63 (.543)
Starting Pitchers
- Seattle Mariners — Bryan Woo (RHP): 9-9, 4.36 ERA, 1.10 WHIP, 142 strikeouts in 142.1 innings
- Boston Red Sox: Starter to be announced
Keys to the Game
Boston comes in fighting for a postseason spot at 75-63, and every September win matters. Seattle, at 64-74, is already out of the playoff picture and playing for pride the rest of the way.
Bryan Woo gets the ball for the Mariners. His 1.10 WHIP tells you he’s been putting runners on base at a decent clip, and a Red Sox lineup with something to play for will be looking to make him pay for any mistake. Boston’s offense has the motivation — and Fenway Park has the history — to make this one interesting even if the standings say otherwise.
This article will be updated after the final out with the result, key plays and video highlights.
