Seattle Mariners vs Toronto Blue Jays ALCS Game 3 Prediction, Odds, and Key Players – October 15, 2025

Wednesday, October 15th, 2025

Toronto Blue Jays at Seattle Mariners: Game 3 ALCS Showdown Preview

The Toronto Blue Jays (94-68, first in the AL East during the regular season) face off against the Seattle Mariners (90-72, first in the AL West during the regular season) at T-Mobile Park in Seattle. This high-stakes Game 3 of the American League Championship Series finds the Mariners leading the series 2-0.

Pitching Probables

The Blue Jays are set to start Shane Bieber (4-2, 3.57 ERA, 1.02 WHIP, 37 strikeouts), while the Mariners will counter with George Kirby (10-8, 4.21 ERA, 1.19 WHIP, 137 strikeouts).

Weather

Today at T-Mobile Park, expect cool fall weather with a high near 59°F under mostly cloudy skies. There is only a 10% chance of precipitation, so rain delays are unlikely. Winds from the southwest at 8-12 mph could influence fly balls slightly, but overall conditions are favorable for baseball.

Game Outlook and Odds

The Mariners have the home-field advantage and are favored at -134, while the Blue Jays are underdogs at +113. The projected over/under is 7 runs.

Team Performance

Seattle boasts a strong 51-30 home record and is 90-72 overall. The Mariners excel when they generate offensive firepower, with a 59-28 record in games where they tally eight or more hits.

Toronto has a 94-68 record overall but has struggled slightly on the road with a 40-41 away record. However, the Blue Jays command the best team batting average in the AL at .265.

The teams are evenly matched in their head-to-head meetings this year, with the season series tied at 4-4 heading into this crucial matchup.

Top Performers

Josh Naylor leads the Mariners with a .295 batting average, adding 29 doubles, a triple, 20 home runs, 48 walks, and 92 RBI. Cal Raleigh has been hot lately, going 13 for 40 with two home runs and five RBI in his last 10 games.

For Toronto, George Springer powers the lineup with 32 home runs and a .556 slugging percentage. Ernie Clement contributes with a .412 average (14 for 34), two doubles, a home run, and eight RBI over his last 10 games.

Recent Form

Over their last 10 games, the Mariners are 5-5, hitting .213 with a 3.34 ERA and an even run differential. The Blue Jays are in stronger form, going 7-3 with a .280 average, 3.84 ERA, and have outscored opponents by 26 runs.

Injuries

Mariners: Jackson Kowar (15-Day IL, shoulder), Trent Thornton (60-Day IL, achilles), Gregory Santos (60-Day IL, knee), Ryan Bliss (60-Day IL, biceps).

Blue Jays: Anthony Santander (day-to-day, back), Jose Berrios (15-Day IL, elbow), Ty France (10-Day IL, oblique), Bo Bichette (10-Day IL, knee), Robinson Pina (60-Day IL, elbow), Nick Sandlin (60-Day IL, elbow), Yimi Garcia (60-Day IL, ankle), Bowden Francis (60-Day IL, shoulder), Ryan Burr (60-Day IL, shoulder), Angel Bastardo (60-Day IL, elbow).

In summary

The ALCS Game 3 matchup between the Toronto Blue Jays and Seattle Mariners promises to be a tightly contested battle. The Mariners hold a 2-0 series lead, but the Blue Jays come in as the top offensive team in the AL and are looking to turn the tide. Favorable weather conditions, strong pitching matchups, and recent performance trends all point towards an exciting and competitive game at T-Mobile Park. Both teams have stars primed to make an impact, making this a must-watch showdown for MLB fans and an important moment in the quest for a World Series berth.

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