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The Mariners odds to win the World Series are +1000.
The Mariners AL pennant odds are +425.
The Mariners AL West champion odds are -185
The Mariners odds to make the playoffs are -1400. Their odds to miss the playoffs are +800.
Where do the Seattle Mariners sit in the current MLB postseason bracket? Updated playoff odds and projected seed for the Mariners. Read More
Find out where the Seattle Mariners rank in MLB payroll and the highest-paid players on their team this season. Read More
The St. Louis Cardinals (185) visit T-Mobile Park to take on the Seattle Mariners (-225) on Wednesday, September 10, 2025. First pitch is scheduled for 9:40pm EDT in Seattle, WA. This season, the Card Read More
The St. Louis Cardinals (+170) visit T-Mobile Park to take on the Seattle Mariners (-210) on Tuesday, September 9, 2025. First pitch is scheduled for 9:40pm EDT in Seattle, WA. This season, the Cardin Read More
The St. Louis Cardinals (+185) visit T-Mobile Park to take on the Seattle Mariners (-225) on Monday, September 8, 2025. First pitch is scheduled for 9:40pm EDT in Seattle, WA. This season, the Cardina Read More
The Seattle Mariners (-115) visit Truist Park to take on the Atlanta Braves (-105) on Sunday, September 7, 2025. First pitch is scheduled for 12:05pm EDT in Atlanta, GA. This season, the Mariners are Read More
The Seattle Mariners (+110) visit Truist Park to take on the Atlanta Braves (-130) on Saturday, September 6, 2025. First pitch is scheduled for 7:15pm EDT in Atlanta, GA. This season, the Mariners are Read More
The Seattle Mariners (+115) visit Truist Park to take on the Atlanta Braves (-140) on Friday, September 5, 2025. First pitch is scheduled for 7:15pm EDT in Atlanta, GA. This season, the Mariners are 7 Read More
The Seattle Mariners (-145) visit George M. Steinbrenner Field to take on the Tampa Bay Rays (+118) on Wednesday, September 3, 2025. First pitch is scheduled for 7:35pm EDT in Tampa, FL. This season, Read More
Run lines, over/under totals, moneylines, and more odds are available for each Mariners game this season.
If you’re in Washington and interested in odds for other teams, check out:
Will the Mariners win the AL West? Will they win the AL pennant? How many home runs will a certain player hit this season?
For example: If you bet $40 on the Mariners (+600) to make the postseason, the bet would settle when Seattle is eliminated or when they clinch a postseason berth.
The run line is baseball’s version of the spread. What’s the final scoring margin of the game?
For example: If you bet $80 on the Mariners -1.5 (+210) against the Oakland Athletics, Seattle must win the game by at least two runs.
Alternatively, if you bet $80 on the Mariners +1.5 (-120) against the New York Yankees, Seattle must lose by one run (or win the game).
Will the Mariners win the game?
For example: If you bet $75 on the Mariners -300 against the Pittsburgh Pirates, Seattle must win the game (in nine innings or extra innings).
How many combined runs will be scored by both teams in the matchup?
For example: If you bet $30 on over 7.5 (-110) in their game against the Kansas City Royals , the teams must combine for at least eight runs.
Alternatively, if you bet $40 on under 7.5 (-110), the teams must combine for seven or fewer runs.
If the combined run total is the same as the over/under total, the bet is a push.
You can combine bets and other bets — baseball or another sport — into one parlay.
For example: If you bet $20 on a two-leg parlay with the Mariners moneyline (-180) vs. the San Francisco Giants and over 7.5 (-110) in the Baltimore Orioles-Tampa Bay Rays game, both must hit for the bet to cash.
If one bet is a push, it’s eliminated from the parlay, and odds (and payout) are recalculated without that leg.
