⚾🔥 HOW TO WATCH: Seattle Mariners vs. Houston Astros — Game Time, TV Channel, Streaming Options and Everything Fans Need to Know

Published September 22, 2026

SEATTLE — The final stretch of the 2026 Major League Baseball season has arrived, and Tuesday night brings another important American League showdown as the Seattle Mariners welcome the Houston Astros to T-Mobile Park.

First pitch is scheduled for 6:40 p.m. Pacific Time / 9:40 p.m.

Eastern Time on Tuesday, September 22, with Seattle beginning a two-game home series against Houston.

For fans looking to follow every pitch, here is everything you need to know about the matchup — including start time, television coverage, streaming options, probable starting pitchers and what is at stake as both clubs enter the closing days of the regular season.

Game Details

Matchup: Houston Astros vs. Seattle Mariners
Date: Tuesday, September 22, 2026
First Pitch: 6:40 p.m. PT / 9:40 p.m. ET
Location: T-Mobile Park, Seattle, Washington
TV: Mariners.TV, Space City Home Network
Streaming: Mariners.TV, MLB.TV for eligible out-of-market viewers, SCHN+, and selected Fubo packages/add-ons depending on location and subscription.

For Seattle-area viewers, Mariners.TV is the primary local television home of the Mariners in 2026.

The service is available throughout the Mariners’ home territory, and Seattle says its locally distributed games can be watched without local blackouts through Mariners.TV, subject to national exclusivity rules. The channel is also carried by providers including Fubo, Xfinity, DIRECTV and Spectrum in eligible areas.

Houston-area viewers can watch through Space City Home Network, the regional television home of the Astros.

Houston fans can also access eligible coverage through SCHN+, while out-of-market viewers may have access through MLB.TV depending on territorial restrictions.

A Late-Season Matchup With Plenty at Stake

This is not simply another date on the schedule.

Houston enters Tuesday at 77–79, while Seattle comes in at 73–83, giving both teams very different but equally compelling reasons to approach the game with urgency.

For the Astros, the final days of September remain meaningful as Houston attempts to finish the season as strongly as possible.

Seattle, meanwhile, is facing a different kind of challenge.

The Mariners have endured a frustrating season and enter the final homestand looking to finish with momentum, evaluate key pieces for the future and give their home crowd something to celebrate before the offseason begins.

That makes Tuesday’s meeting more interesting than the standings alone might suggest.

Late-season baseball often creates unexpected drama.

Young players receive opportunities.

Veterans fight to finish strong.

Pitchers attempt to reach individual milestones.

And teams already thinking about the future begin learning which players may become part of the next chapter.

Logan Gilbert Gets the Ball for Seattle

Seattle is expected to send right-hander Logan Gilbert to the mound.

Gilbert enters the matchup with a 12–10 record and 3.69 ERA, along with 194 strikeouts.

Those numbers immediately make his start one of the biggest reasons for Mariners fans to tune in.

Gilbert has long been capable of dominating when his command is sharp, and facing a Houston lineup with dangerous hitters will provide another significant test.

For Seattle, a strong outing from Gilbert could be exactly what the club needs to establish control early and prevent Houston from generating momentum.

Cristian Javier Expected to Start for Houston

The Astros are scheduled to counter with Cristian Javier.

The Houston right-hander enters Tuesday with a 2–6 record and 5.31 ERA, along with 57 strikeouts.

Javier’s ability to avoid early trouble could become one of the defining storylines of the game.

T-Mobile Park can quickly become difficult for visiting teams when Seattle generates early offense and brings the home crowd into the contest.

The first few innings may therefore be crucial.

If Javier can keep Seattle quiet, Houston should have opportunities to attack later.

If the Mariners force him into long counts and create traffic on the bases, the game could shift quickly.

How to Stream the Game

Seattle fans inside the Mariners’ broadcast territory can use Mariners.TV, which the organization introduced as its direct-to-consumer in-market streaming platform for 2026.

Traditional television customers can also find Mariners.TV through participating providers.

For viewers outside the Seattle market, MLB.TV remains an option, although blackout and territorial restrictions can apply.

Astros fans in Houston’s territory can watch through Space City Home Network or use SCHN+ where eligible.

Fubo also lists Houston at Seattle among its available baseball programming, with access depending on the viewer’s package, market and any required MLB.TV add-on.

Radio Coverage

Fans who prefer radio can follow Seattle through Seattle Sports 710 AM, the Mariners’ flagship station.

Houston’s English-language flagship is KBME 790 AM, while Spanish-language Astros coverage is available through KLTN-TUDN 102.9 FM.

Why Tuesday Night Is Worth Watching

September baseball has a different feeling.

Every game carries the sense that time is running out.

For Houston, Tuesday represents another opportunity to strengthen its finish.

For Seattle, it is another chance to reward the home crowd and build positive momentum before the season closes.

The pitching matchup between Gilbert and Javier provides an intriguing contrast, while both lineups have enough power to change the game with one swing.

And with T-Mobile Park hosting the action under the lights, this has the ingredients for an entertaining late-season battle.

Houston Astros vs. Seattle Mariners.

Tuesday, September 22.

6:40 p.m. PT / 9:40 p.m. ET.

T-Mobile Park.

For Mariners and Astros fans, Tuesday night baseball is ready to take center stage.