Seattle Mariners

Seattle Mariners39-61-0 ATS · 51-49-0 ML · 2026

MLBAmerican • AL West

The Seattle Mariners are 51-49-0 straight up, 39-61-0 ATS (39% cover rate), 48-46-6 O/U (51.06% over rate) in 2026 with -12.92% 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

Cincinnati Reds
vs CIN
Wed, Jul 22 · 1:41 AM
View Matchup
Spread
+1.5 (-204)
Total
O/U 7.5
ML
-119
DateOpponentSpreadO/UML
Jul 22Cincinnati Redsvs Reds-1.5 (+139)8-157
Odds via DraftKings. Updated every 5 minutes.

Seattle Mariners Betting Record — 2026

Against the Spread
39-61-0
Win%
39%
ROI
-12.92%
Units
-12.9
Moneyline
51-49-0
Win%
51%
ROI
-12.95%
Units
-12.9
Over Rate
48-46-6
Win%
51.06%
ROI
-2.41%
Units
-2.3

Mariners Monthly Performance

-13%39-61 · -13.0u
+3.8%
-20.6%
-8.9%
-10%
-19.4%
Mar
3-3
Apr
9-17
May
11-17
Jun
10-16
Jul
6-8
Top Betting AngleMin. 10 games
Mariners Fade Mariners ATS: 61-39-0
Win %: 61%ROI: +3.84%100 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
21-29-0-3.82%
ML
30-20-0-0.89%
O/U
24-23-3-2.47%
Away
ATS
18-32-0-22.02%
ML
21-29-0-25.02%
O/U
24-23-3-2.36%

Mariners as Favorite / Underdog

As Favorite
ATS
35-55-0-10.06%
ML
48-42-0-10.14%
As Underdog
ATS
4-6-0-38.68%
ML
3-7-0-38.3%

Betting Against the Mariners

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

Fade Against the Spread
61-39-0
Win%
61%
ROI
+3.84%
Units
+3.8
Fade Moneyline
49-51-0
Win%
49%
ROI
+1.7%
Units
+1.7

Mariners Recent Games

DateOpponentScoreATSMLO/U
2026-07-20vs RedsW 8-0WO
2026-07-19vs GiantsW 6-3WO
2026-07-18vs GiantsW 4-3WP
2026-07-17vs GiantsL 0-7LP
2026-07-12@ RaysW 2-8WO
2026-07-11@ RaysL 6-1LP
2026-07-10@ RaysL 7-2LO
2026-07-09@ MarlinsL 8-4LO
2026-07-08@ MarlinsL 2-0LU
2026-07-07@ MarlinsL 6-5LO
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
1SEA51-49-051%-12.95%39-61-039%-12.92%48-46-651.06%-2.41%
2TEX50-49-050.51%-2.34%44-55-044.44%-14.79%51-42-654.84%+5.12%
3HOU48-54-047.06%-5.21%49-53-048.04%-11.56%53-43-655.21%+6.83%
4OAK43-57-043%-12.26%47-53-047%-17.35%48-48-450%-4.73%
5LAA40-61-039.6%-14.81%53-48-052.48%-7.62%46-54-146%-12.29%

Frequently Asked Questions

What is the Seattle Mariners record against the spread?
The Seattle Mariners are 39-61-0 against the spread in 2026 on DraftKings, with a 39% cover rate and -12.92% ROI.
What is the Seattle Mariners home and away ATS record?
At home, the Seattle Mariners are 21-29-0 ATS (-3.82% ROI). On the road, they are 18-32-0 ATS (-22.02% ROI).
How do the Seattle Mariners perform as favorites vs underdogs ATS?
As favorites, the Seattle Mariners are 35-55-0 ATS (38.89% cover rate). As underdogs, they are 4-6-0 ATS (40% cover rate).
What is the Seattle Mariners moneyline record?
The Seattle Mariners are 51-49-0 straight up (moneyline) in 2026, with a 51% win rate and -12.95% ROI on DraftKings.

Seattle Mariners Betting Record & ATS Analysis

The Seattle Mariners are 39-61-0 against the spread in 2026 on DraftKings, covering at a 39% rate. Their straight-up moneyline record is 51-49-0 (51% win rate). Games involving the Mariners have gone Over at a 51.06% rate.

At home, the Mariners are 21-29-0 ATS (-3.82% ROI). On the road, they are 18-32-0 ATS (-22.02% ROI). As a favorite, Mariners cover at 38.89%. As an underdog, they cover at 40%.

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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