Seattle Mariners 2025 MLB World Series Futures – MLB Lines
Last year was more of the same for the Seattle Mariners. Seattle teased fans and gamblers with a playoff berth is the mediocre American League West but failed to close the deal. Few teams are better at perpetually disappointing their fans than the Seattle Mariners. It all goes back to 2001 when the M’s went 116-46, only to get blown out 4-1 in the ALCS. In the 2024 future market, the Mariners are a middle-of-the-pack brand. Seattle is a hard sell to the casual sector because of their mediocre history and location. A lackluster offseason has not inspired confidence or much betting action.
2025 MLB World Series Betting Odds
Seattle Mariners MLB Betting Odds
In 2024, the Seattle Mariners had a record of 85-77 and were 2nd in the American League West Division. Offensively, Seattle ranked 21st for runs scored, 28th for batting average, 21st for OPS, 11th for home runs, and 9th for stolen bases. Defensively, Seattle ranked 1st for earned run average, 1st for WHIP, 29th for strikeouts, 1st for quality starts, 8th for fewest errors, and 9th for bullpen ERA.
Seattle ranks 16th for MLB payroll.
Major moves: Re-signed IF Jorge Polanco to a 1-year deal, Signed IF Donovan Solano to a 1-year deal, Acquired IF Austin Shenton from Tampa Bay for cash.
Seattle’s competitive window is tantalizingly open, yet the club has failed to make the most of that opportunity. Buoyed by a historically talented, mostly homegrown pitching staff, the 2024 Mariners finished just one game behind the Detroit Tigers for the last AL wild-card spot. The culprit behind their failure was a horribly frustrating offense that struck out more often than any other team in baseball.
To improve that unit, president of baseball operations Jerry Dipoto and Co. have handed out low-risk, one-year deals to a pair of utility infielders.
After eight productive seasons in Minnesota, Polanco fell off in 2024 while battling through injury; the M’s are betting on a bounce-back. Solano — a 37-year-old, low-slug, high-average DH type — shouldn’t dramatically move the needle, either. Dipoto, famous for his trigger-happy, trade-heavy approach to roster construction, has yet to make a significant deal this winter.
Seattle Mariners Key Players
RHP Luis Castillo is the #1 starter for Seattle. Last year, Castillo was 11-12 with a 3.64 earned run average with a 1.17 WHIP. In 2023, he was 14-9 with a 3.34 ERA and 1.10 WHIP. Castillo is a three-time All-Star.
RHP Andres Munoz is the Seattle closer. In 2023, Munoz was 4-7 with a 2.94 ERA and 1.27 WHIP with 13 saves in 16 opportunities. In 2024, he was 3-7 with a 2.12 ERA and 0.96 WHIP. Munoz saved 22 games.
In 2023, CF Julio Rodriguez produced 102 runs, 37 doubles, 32 home runs, 103 runs batted in, a .485 slugging percentage, and a .818 OPS. He is a two-time All-Star and two-time Silver Slugger Award winner. Last year, he hit .273 with 20 home runs and 68 RBI. He hit .273 with a .734 OPS.
Seattle Mariners Manager
Manager Dan Wilson took over at the end of last season and went 21-13. He is a former Mariners player and is a member of the team’s Hall of Fame.
Season-by-Season Record (Since 2015)
| SEASON |
WINS |
LOSSES |
FINISH |
POSTSEASON |
| 2024 |
85 |
77 |
2nd |
- |
| 2023 |
88 |
74 |
3rd |
- |
| 2022 |
90 |
72 |
2nd |
Lost ALDS (Astros) 3–0 |
| 2021 |
90 |
72 |
2nd |
- |
| 2020 |
27 |
33 |
3rd |
- |
| 2019 |
68 |
94 |
5th |
- |
| 2018 |
89 |
73 |
3rd |
- |
| 2017 |
78 |
84 |
3rd |
- |
| 2016 |
86 |
76 |
2nd |
- |
| 2015 |
76 |
76 |
4th |
- |
MLB Teams
American League - West
American League - Central
American League - East
National League - West
National League - Central
National League - East
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