Seattle Mariners

Seattle Mariners36-57-0 ATS · 47-46-0 ML · 2026

MLBAmerican • AL West

The Seattle Mariners are 47-46-0 straight up, 36-57-0 ATS (38.71% cover rate), 44-46-3 O/U (48.89% over rate) in 2026 with -12.86% ROI on flat $100 bets at closing odds. Closing lines from DraftKings, FanDuel, and BetMGM, graded against official MLB box scores.

See methodology.

Mariners Upcoming Odds

Tampa Bay Rays
@ TBR
Fri, Jul 10 · 11:11 PM
View Matchup
Spread
-1.5 (+168)
Total
O/U 8
ML
+100
Odds via DraftKings. Updated every 5 minutes.

Seattle Mariners Betting Record — 2026

Against the Spread
36-57-0
Win%
38.71%
ROI
-12.86%
Units
-12.0
Moneyline
47-46-0
Win%
50.54%
ROI
-13.97%
Units
-13.0
Over Rate
44-46-3
Win%
48.89%
ROI
-6.46%
Units
-5.8

Mariners Monthly Performance

-13%36-57 · -12.1u
+3.8%
-20.6%
-8.9%
-10%
-25.1%
Mar
3-3
Apr
9-17
May
11-17
Jun
10-16
Jul
3-4
Top Betting AngleMin. 10 games
Mariners Fade Mariners ATS: 57-36-0
Win %: 61.29%ROI: +3.71%93 games

Discover more profitable angles with LineTerminal's system builder — filter by spread range, home/away, favorite/dog, month, and 80+ more variables.

Mariners Home / Away Splits

Home
ATS
19-27-0-5.18%
ML
27-19-0-2.59%
O/U
22-23-1-6.44%
Away
ATS
17-30-0-20.39%
ML
20-27-0-25.11%
O/U
22-23-2-6.48%

Mariners as Favorite / Underdog

As Favorite
ATS
33-52-0-10.03%
ML
45-40-0-10.44%
As Underdog
ATS
3-5-0-43%
ML
2-6-0-51.5%

Betting Against the Mariners

What happens when you fade the Mariners and bet on their opponent every game?

Fade Against the Spread
57-36-0
Win%
61.29%
ROI
+3.71%
Units
+3.5
Fade Moneyline
46-47-0
Win%
49.46%
ROI
+2.7%
Units
+2.5

Mariners Recent Games

View full schedule

Mariners Player Props

Seattle Mariners Player Prop Performance

Historical hit rates for every Mariners player — hits, home runs, RBIs, strikeouts.

Mariners Head-to-Head Matchups

AL West Standings

MoneylineATSOver/Under
#TeamRecordWin%ROIRecordWin%ROIRecordWin%ROI
1TEX47-45-051.09%-1.22%43-49-046.74%-10.13%44-42-651.16%-1.75%
2SEA47-46-050.54%-13.97%36-57-038.71%-12.86%44-46-348.89%-6.46%
3HOU46-49-048.42%-2.25%45-50-047.37%-13.85%49-40-655.06%+6.46%
4OAK41-52-044.09%-10.12%45-48-048.39%-14.59%44-45-449.44%-5.82%
5LAA37-57-039.36%-15.41%49-45-052.13%-7.73%46-47-149.46%-5.69%

Frequently Asked Questions

What is the Seattle Mariners record against the spread?
The Seattle Mariners are 36-57-0 against the spread in 2026 on DraftKings, with a 38.71% cover rate and -12.86% ROI.
What is the Seattle Mariners home and away ATS record?
At home, the Seattle Mariners are 19-27-0 ATS (-5.18% ROI). On the road, they are 17-30-0 ATS (-20.39% ROI).
How do the Seattle Mariners perform as favorites vs underdogs ATS?
As favorites, the Seattle Mariners are 33-52-0 ATS (38.82% cover rate). As underdogs, they are 3-5-0 ATS (37.5% cover rate).
What is the Seattle Mariners moneyline record?
The Seattle Mariners are 47-46-0 straight up (moneyline) in 2026, with a 50.54% win rate and -13.97% ROI on DraftKings.

Seattle Mariners Betting Record & ATS Analysis

The Seattle Mariners are 36-57-0 against the spread in 2026 on DraftKings, covering at a 38.71% rate. Their straight-up moneyline record is 47-46-0 (50.54% win rate). Games involving the Mariners have gone Over at a 48.89% rate.

At home, the Mariners are 19-27-0 ATS (-5.18% ROI). On the road, they are 17-30-0 ATS (-20.39% ROI). As a favorite, Mariners cover at 38.82%. As an underdog, they cover at 37.5%.

Data sourced from DraftKings closing lines. Updated daily after games are graded. Past performance does not guarantee future results. LineTerminal offers advanced system-building tools to research Seattle Mariners betting trends across 80+ filters and 5+ years of data.

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