The Seattle Mariners and Toronto Blue Jays face off tonight in Game 4 of the ALCS at T-Mobile Park in Seattle.
The Blue Jays roared back to life on Wednesday night, blasting their way to a 13–4 victory to avoid a 3–0 series deficit. Their offense erupted for five home runs, including blasts from Vladimir Guerrero Jr., George Springer, Alejandro Kirk, Andrés Giménez, and Addison Barger.
Guerrero led the way with a 4-for-4 night featuring a home run and two doubles, powering an early five-run rally in the third inning that silenced the Seattle crowd.
Shane Bieber rebounded after a rocky first inning, settling in to strike out eight batters across six innings while holding the Mariners to just four hits after the first frame.
On the other side, George Kirby struggled mightily, giving up eight earned runs in just over four innings. Seattle managed solo home runs from Randy Arozarena and Cal Raleigh, but their bats couldn’t match Toronto’s relentless attack.
Tonight, Luis Castillo takes the mound for Seattle, entering with a solid 11–8 record and 3.54 ERA. Castillo has been Seattle’s most dependable starter down the stretch, known for his sinking fastball and ability to induce ground balls — exactly the traits needed to slow Toronto’s suddenly red-hot lineup.
Toronto turns to Max Scherzer, making his first postseason start as a Blue Jay. Scherzer, who finished the regular season 5–5 with a 5.19 ERA, carried a 7.55 ERA over his last seven starts.
Scherzer hasn’t pitched since late September but carries a wealth of October experience, with a career postseason record of 7-8 and a 3.78 ERA.
The 41-year-old veteran will need to shake off the rust quickly against a disciplined Seattle lineup that has thrived on timely hitting all postseason.
Prediction
Max Scherzer’s late-season struggles are likely to carry over tonight, even with extra rest. Expect Seattle’s lineup to jump on him early, forcing Toronto to the bullpen by the middle innings. Luis Castillo’s consistency and command should give the Mariners the edge at home.
Prediction: Mariners 7, Blue Jays 4
Starting Lineups
Seattle Mariners
1. Randy Arozarena – LF
2. Cal Raleigh – C
3. Julio Rodríguez – CF
4. Jorge Polanco – DH
5. Josh Naylor – 1B
6. Eugenio Suárez – 3B
7. Dominic Canzone – RF
8. J.P. Crawford – SS
9. Leo Rivas – 2B
Starting Pitcher: Luis Castillo (RHP)
Toronto Blue Jays
1. George Springer – DH
2. Nathan Lukes – LF
3. Vladimir Guerrero Jr. – 1B
4. Alejandro Kirk – C
5. Daulton Varsho – CF
6. Ernie Clement – 3B
7. Addison Barger – RF
8. Isiah Kiner-Falefa – 2B
9. Andrés Giménez – SS
Starting Pitcher: Max Scherzer (RHP)
How to Watch Blue Jays vs. Mariners
First pitch for today’s Mariners-Blue Jays game is set for 8:33 PM Eastern / 5:33 PM Pacific at T-Mobile Park in Seattle.
The game airs live on FS1 and streams on the FOX Sports app and website.
If those options aren’t available, several services offer free trials that include FS1 and FOX Sports.
FuboTV, YouTube TV, Hulu + Live TV, DirecTV Stream, and FOX One all provide free trial periods that give you immediate access to the game.
YouTube TV even offers a 20-minute free preview, without having to register for a trial — if you just want to catch part of the game.
Toronto Blue Jays vs. Seattle Mariners
Date: Thursday, October 16, 2025
Time: 8:33 PM Eastern / 5:33 PM Pacific
Venue: T-Mobile Park, Seattle, WA
TV: FS1
Streaming: FOX Sports app and website
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