Inside Edge
Seattle Mariners Betting Record — 2025
Against the Spread
78-96-0
Win%
44.83%
ROI
-11.17%
Units
-19.4
Moneyline
96-78-0
Win%
55.17%
ROI
-0.91%
Units
-1.6
Over Rate
95-73-6
Win%
56.55%
ROI
+7.25%
Units
+12.2
Mariners Monthly Performance
-11.2%78-96 · -19.5u
-55.2%
+20.4%
-21.4%
-34.6%
-12.4%
-25.4%
+14.9%
-2.8%
Mar
1-4
1-4
Apr
15-10
15-10
May
11-16
11-16
Jun
9-18
9-18
Jul
11-15
11-15
Aug
10-17
10-17
Sep
14-11
14-11
Oct
7-5
7-5
Top Betting AngleMin. 10 games
Mariners As Underdog ML: 25-24-0
Win %: 51.02%ROI: +11.6%49 games
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Mariners Home / Away Splits
Home
ATSAgainst the Spread
41-46-0-9.51%
MLMoneyline
54-33-0+3.01%
O/UOver Rate
44-38-5+1.88%
Away
ATSAgainst the Spread
37-50-0-12.83%
MLMoneyline
42-45-0-4.84%
O/UOver Rate
51-35-1+12.36%
Mariners as Favorite / Underdog
As Favorite
Against the Spread
47-78-0-15.81%
Moneyline
71-54-0-5.82%
As Underdog
Against the Spread
31-18-0+0.67%
Moneyline
25-24-0+11.6%
Betting Against the Mariners
What happens when you fade the Mariners and bet on their opponent every game?
Fade Against the Spread
96-78-0
Win%
55.17%
ROI
-2.33%
Units
-4.0
Fade Moneyline
78-96-0
Win%
44.83%
ROI
-8.44%
Units
-14.7
Mariners Recent Games
| Date | Opponent | Score | ATS | ML | O/U |
|---|---|---|---|---|---|
| 2025-10-20 |  @ Blue Jays | L 4-3 | ✓ | L | U |
| 2025-10-19 | @ Blue Jays | L 6-2 | ✗ | L | O |
| 2025-10-17 | vs Blue Jays | W 6-2 | ✓ | W | O |
| 2025-10-16 | vs Blue Jays | L 2-8 | ✗ | L | O |
| 2025-10-15 | vs Blue Jays | L 4-13 | ✗ | L | O |
| 2025-10-13 | @ Blue Jays | W 3-10 | ✓ | W | O |
| 2025-10-12 | @ Blue Jays | W 1-3 | ✓ | W | U |
| 2025-10-10 |  vs Tigers | W 3-2 | ✓ | W | U |
| 2025-10-08 | @ Tigers | L 9-3 | ✗ | L | O |
| 2025-10-07 | @ Tigers | W 4-8 | ✓ | W | O |
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
| Moneyline | ATS | Over/Under | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| # | Team | Record | Win% | ROI | Record | Win% | ROI | Record | Win% | ROI |
| 1 |  Mariners | 96-78-0 | 55.17% | -0.91% | 78-96-0 | 44.83% | -11.17% | 95-73-6 | 56.55% | +7.25% |
| 2 |  Astros | 87-75-0 | 53.7% | +0.24% | 81-81-0 | 50% | -4.59% | 72-83-7 | 46.45% | -11.35% |
| 3 |  Rangers | 81-81-0 | 50% | -8.44% | 86-76-0 | 53.09% | +1.7% | 71-89-2 | 44.38% | -15.26% |
| 4 |  Athletics | 76-86-0 | 46.91% | -1.2% | 86-75-0 | 53.42% | -6.25% | 77-77-8 | 50% | -4.6% |
| 5 |  Angels | 72-90-0 | 44.44% | -2.11% | 84-77-0 | 52.17% | -5.63% | 86-72-4 | 54.43% | +3.68% |
Frequently Asked Questions
What is the Seattle Mariners record against the spread?
The Seattle Mariners are 78-96-0 against the spread in 2025 on DraftKings, with a 44.83% cover rate and -11.17% ROI.
What is the Seattle Mariners home and away ATS record?
At home, the Seattle Mariners are 41-46-0 ATS (-9.51% ROI). On the road, they are 37-50-0 ATS (-12.83% ROI).
How do the Seattle Mariners perform as favorites vs underdogs ATS?
As favorites, the Seattle Mariners are 47-78-0 ATS (37.6% cover rate). As underdogs, they are 31-18-0 ATS (63.27% cover rate).
What is the Seattle Mariners moneyline record?
The Seattle Mariners are 96-78-0 straight up (moneyline) in 2025, with a 55.17% win rate and -0.91% ROI on DraftKings.