ALDS Game 1 Preview: Seattle Mariners vs. Detroit Tigers – October 4, 2025 Matchup, Odds, Key Players & More

Saturday, October 4th, 2025

Detroit Tigers at Seattle Mariners: ALDS Game 1 Preview

Game Overview

The postseason heats up as the Detroit Tigers (87-75, second in the AL Central during the regular season) travel to Seattle to face the Seattle Mariners (90-72, first in the AL West during the regular season) for Game 1 of the American League Division Series. First pitch at T-Mobile Park is scheduled for 7:38PM local time.

Weather

At T-Mobile Park today, expect cool fall baseball weather with temperatures around 58°F under mostly cloudy skies. There's only a slight chance of precipitation, so rain delays are unlikely. Winds will be light at 6 mph out of the southwest, making it a comfortable day for players and fans alike.

Season Records and Offense

Seattle enters the postseason with a strong 90-72 overall record, including an impressive 51-30 at home. The Mariners have showcased their power throughout the season, ranking third in Major League Baseball with 238 home runs, averaging 1.5 homers per game.

Detroit comes in at 87-75 and holds a 41-40 record on the road. The Tigers have hit 198 total home runs—fifth in the American League—averaging 1.2 per game. This marks the seventh head-to-head meeting between these clubs this season, with the Mariners currently leading the season series four games to two.

Key Players to Watch

For Seattle, Josh Naylor has been a consistent threat, recording 29 doubles, a triple, and 20 home runs this year. Over the last 10 games, Cal Raleigh has added power with two doubles and four home runs, going 9-for-38 at the plate.

Detroit's offense is fueled by Riley Greene, who leads the team with 36 homers and an impressive .493 slugging percentage. Javier Baez has also been hot, posting a 12-for-35 line with one home run and six RBI over his last 10 games.

Recent Performance

The Mariners have gone 7-3 over their last 10 games, batting .239 with a team ERA of 2.80, outscoring opponents by 16 runs. Meanwhile, the Tigers have struggled a bit, going 4-6 during the same stretch. They’ve batted .229 with a 3.28 ERA and have been outscored by 11 runs.

Current Injuries

Mariners: Dominic Canzone (day-to-day, undisclosed), Josh Naylor (day-to-day, groin), Bryan Woo (day-to-day, pectoral), Jackson Kowar (15-Day IL, shoulder), Trent Thornton (60-Day IL, achilles), Gregory Santos (60-Day IL, knee), Ryan Bliss (60-Day IL, biceps).

Tigers: Matt Vierling (10-Day IL, oblique), Colt Keith (10-Day IL, rib cage), Sawyer Gipson-Long (15-Day IL, neck), Beau Brieske (60-Day IL, forearm), Reese Olson (60-Day IL, shoulder), Sean Guenther (60-Day IL, hip), Jackson Jobe (60-Day IL, flexor), Jason Foley (60-Day IL, shoulder), Alex Cobb (60-Day IL, hip), Ty Madden (60-Day IL, shoulder).

Betting Odds

The Mariners are favored at -211, with the Tigers listed at +174. The over/under for the contest is set at seven runs.

In summary

Game 1 of the ALDS between the Detroit Tigers and Seattle Mariners promises intense postseason action, with top home run hitters and strong pitching matchups set against classic fall weather in Seattle. The Mariners enter with the home-field edge and a season-series advantage, while the Tigers aim to start the series strong on the road. For fans and bettors, this matchup is one to watch closely as the battle for American League supremacy begins.

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