Inside Edge
Seattle Mariners Betting Record — 2021
Against the Spread
33-28-0
Win%
54.1%
ROI
+0.62%
Units
+0.4
Moneyline
74-66-0
Win%
52.86%
ROI
+14.18%
Units
+19.9
Over Rate
33-26-2
Win%
55.93%
ROI
+6.72%
Units
+4.0
Mariners Monthly Performance
+0.8%33-28 · +0.5u
-2.8%
-4.5%
+11.1%
-31.7%
Jul
6-5
6-5
Aug
12-11
12-11
Sep
14-10
14-10
Oct
1-2
1-2
Top Betting AngleMin. 10 games
Mariners As Underdog ML: 20-15-0
Win %: 57.14%ROI: +32.01%35 games
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Mariners Home / Away Splits
Home
ATSAgainst the Spread
12-17-0-22.99%
MLMoneyline
37-32-0+8.96%
O/UOver Rate
18-11-0+18.04%
Away
ATSAgainst the Spread
21-11-0+22%
MLMoneyline
37-34-0+19.26%
O/UOver Rate
15-15-2-4.22%
Mariners as Favorite / Underdog
As Favorite
Against the Spread
9-17-0-24%
Moneyline
15-11-0-2.1%
As Underdog
Against the Spread
24-11-0+18.9%
Moneyline
20-15-0+32.01%
Betting Against the Mariners
What happens when you fade the Mariners and bet on their opponent every game?
Fade Against the Spread
28-33-0
Win%
45.9%
ROI
-13.31%
Units
-8.1
Fade Moneyline
66-74-0
Win%
47.14%
ROI
-13.85%
Units
-19.4
Mariners Recent Games
| Date | Opponent | Score | ATS | ML | O/U |
|---|---|---|---|---|---|
| 2021-10-03 |  vs Angels | L 3-7 | ✗ | L | O |
| 2021-10-02 | vs Angels | W 6-4 | ✓ | W | O |
| 2021-10-01 | vs Angels | L 1-2 | ✗ | L | U |
| 2021-09-28 |  vs Athletics | W 4-2 | ✓ | W | U |
| 2021-09-27 | vs Athletics | W 13-4 | ✓ | W | O |
| 2021-09-26 | @ Angels | W 1-5 | ✓ | W | U |
| 2021-09-25 | @ Angels | L 14-1 | ✗ | L | O |
| 2021-09-24 | @ Angels | W 5-6 | ✗ | W | O |
| 2021-09-23 | @ Athletics | W 5-6 | ✓ | W | O |
| 2021-09-22 | @ Athletics | W 1-4 | ✓ | W | U |
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 |  Astros | 91-66-0 | 57.96% | -4.57% | 32-43-0 | 42.67% | -19.09% | 37-32-6 | 53.62% | +1.79% |
| 2 |  Mariners | 74-66-0 | 52.86% | +14.18% | 33-28-0 | 54.1% | +0.62% | 33-26-2 | 55.93% | +6.72% |
| 3 |  Angels | 69-79-0 | 46.62% | -5.71% | 29-37-0 | 43.94% | -14.08% | 30-34-2 | 46.88% | -10.25% |
| 4 |  Rangers | 53-91-0 | 36.81% | -12.88% | 27-36-0 | 42.86% | -18.25% | 32-27-4 | 54.24% | +4.52% |
| 5 |  Athletics | — | — | — | — | — | — | — | — | — |
Frequently Asked Questions
What is the Seattle Mariners record against the spread?
The Seattle Mariners are 33-28-0 against the spread in 2021 on DraftKings, with a 54.1% cover rate and +0.62% ROI.
What is the Seattle Mariners home and away ATS record?
At home, the Seattle Mariners are 12-17-0 ATS (-22.99% ROI). On the road, they are 21-11-0 ATS (+22% ROI).
How do the Seattle Mariners perform as favorites vs underdogs ATS?
As favorites, the Seattle Mariners are 9-17-0 ATS (34.62% cover rate). As underdogs, they are 24-11-0 ATS (68.57% cover rate).
What is the Seattle Mariners moneyline record?
The Seattle Mariners are 74-66-0 straight up (moneyline) in 2021, with a 52.86% win rate and +14.18% ROI on DraftKings.