Upcoming Seattle Mariners game added to ESPN TV schedule

The Seattle Mariners will be featured on an additional national TV broadcast before the end of the regular season.

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ESPN announced schedule updates on Thursday afternoon to its MLB coverage in September, with the Mariners’ Sept. 21 series finale on the road against the Houston Astros now moved into the Sunday Night Baseball slot.

The ESPN broadcast of the Sept. 21 Mariners-Astros game will have a start time of 4 p.m. Pacific, pushing the game back five hours from its initial scheduled time of 11:10 a.m.

It will be a marquee late-season matchup between the two AL West rivals. The Astros entered Thursday with a 77-63 record, putting them four games ahead of the Mariners for first place in the division. At 73-67, the Mariners remained in position for the American League’s third and final wild card, 1 1/2 games ahead of the Texas Rangers.

The Mariners will now be in the Sunday Night Baseball spotlight for the third time in just over a year. They hosted the New York Mets last August in a Sunday primetime game, then played the Mets again last month in the Little League Classic in Pennsylvania that was also televised on ESPN.

Prior to the August 2024 game against the Mets, the Mariners had not played on Sunday Night Baseball in over 20 years, with their previous occurrence being June 6, 2004 against the Chicago White Sox.

The Mariners have three other games scheduled for national broadcasts in coming weeks. They’ll be on Roku MLB Sunday Leadoff this Sunday in a 9:05 a.m. road game against the Atlanta Braves, and play back-to-back home games against the Los Angeles Angels on Thursday, Sept. 11 and Friday, Sept. 12 that will air on MLB Network and Apple TV+, respectively.

The Sept. 11 game will also air on the Mariners’ usual TV home, ROOT Sports, whereas the others are exclusive to the national TV outlets.

As always, the radio broadcast of every remaining Mariners game will be available through Seattle Sports, the flagship station of the Mariners Radio Network. Click here for details on how to hear each game.

In addition to announcing the M’s-Astros game for Sunday Night Baseball, ESPN has set a Sunday, Sept. 14 game between the New York Yankees and Boston Red Sox – the two AL wild card teams ahead of Seattle – to their TV schedule as well as a Mets game against the Chicago Cubs on Wednesday, Sept. 24.

The 2025 MLB #Postseason chase is on!

⚾️ Key MLB matchups + whip-around coverage across ESPN networks this September
⚾️ All leading to #MLB's Wild Card Series on Sept. 30, exclusively on ESPN

Details: https://t.co/U0oHSRgnx3 pic.twitter.com/LVdxwl9h8E

— ESPN PR (@ESPNPR) September 4, 2025

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