Home / MLB / MLB Team Betting Records / Mariners Betting Record
Seattle Mariners Betting Record 2026
The Mariners went 76-86 in the 2026 regular season. A bettor who put 1 unit on them at the closing moneyline in every game finished -25.71u (-16.0% ROI), 30th of 30 MLB teams. They were 62-99 on the run line and 86-67-9 against the total, so their games leaned over (4th in over percentage).
Updated October 1, 2026. Closing lines, regular season games only, 2016 to 2026. How these numbers are calculated.
Mariners 2026 betting summary
At home the Mariners were 43-38 (-8.07u); on the road 33-48 (-17.64u). As a favorite they went 62-61 (-17.83u), and as an underdog 14-24 (-7.88u).
Mariners betting record by season, 2016 to 2026
Each row is one regular season. Moneyline units assume 1 unit on the Mariners in every game at the closing price. Their best year for a moneyline bettor in this span was 2021 (+36.68u); the worst was 2026 (-25.71u).
| Season | Record | ML units | ML ROI | Run line | O/U/P | Avg total | Runs/G | Allowed/G |
|---|---|---|---|---|---|---|---|---|
| 2026 | 76-86 | -25.71u | -16.0% | 62-99 | 86-67-9 | 7.80 | 4.10 | 4.46 |
| 2025 | 90-72 | -2.46u | -1.5% | 69-85 | 88-69-5 | 8.00 | 4.73 | 4.28 |
| 2024 | 85-77 | -9.05u | -5.6% | 73-89 | 76-74-12 | 7.60 | 4.17 | 3.75 |
| 2023 | 88-74 | -6.44u | -4.0% | 76-86 | 81-74-7 | 8.14 | 4.68 | 4.07 |
| 2022 | 90-72 | +6.68u | +4.1% | 85-77 | 76-79-7 | 7.77 | 4.26 | 3.85 |
| 2021 | 90-72 | +36.68u | +22.6% | 93-69 | 84-75-3 | 8.37 | 4.30 | 4.62 |
| 2020 | 25-29 | +6.82u | +12.6% | 31-23 | 28-22-4 | 8.66 | 4.19 | 5.02 |
| 2019 | 68-94 | -16.54u | -10.2% | 81-81 | 84-67-11 | 9.31 | 4.68 | 5.51 |
| 2018 | 89-73 | +14.88u | +9.2% | 80-82 | 78-81-3 | 8.41 | 4.18 | 4.39 |
| 2017 | 78-84 | -10.79u | -6.7% | 71-91 | 73-79-10 | 9.06 | 4.63 | 4.77 |
| 2016 | 86-76 | +0.98u | +0.6% | 80-82 | 78-75-9 | 8.24 | 4.74 | 4.36 |
| All 11 seasons | 865-809 | -4.95u | -0.3% | 801-864 | 832-762-80 | 8.28 | 4.44 | 4.42 |
Mariners betting splits, 2026
| Situation | Games | Record | ML units | ML ROI | Run line | O/U/P |
|---|---|---|---|---|---|---|
| Home | 81 | 43-38 | -8.07u | -10.0% | 30-51 | 42-33-6 |
| Road | 81 | 33-48 | -17.64u | -22.1% | 32-48 | 44-34-3 |
| As favorite | 123 | 62-61 | -17.83u | -14.5% | 43-80 | 62-53-8 |
| As underdog | 38 | 14-24 | -7.88u | -20.7% | 19-19 | 24-13-1 |
| Favorite of -150 or shorter | 41 | 25-16 | -1.43u | -3.5% | 18-23 | 22-15-4 |
| Underdog of +130 or longer | 6 | 2-4 | -0.55u | -9.2% | 3-3 | 4-2-0 |
| After a win | 75 | 34-41 | -15.51u | -20.7% | 24-51 | 39-32-4 |
| After a loss | 86 | 42-44 | -9.21u | -10.8% | 38-47 | 46-35-5 |
| vs AL West rivals | 52 | 28-24 | -3.85u | -7.4% | 24-28 | 33-17-2 |
| vs NL (interleague) | 48 | 23-25 | -6.76u | -14.1% | 13-35 | 24-21-3 |
By month
| Situation | Games | Record | ML units | ML ROI | Run line | O/U/P |
|---|---|---|---|---|---|---|
| March | 6 | 3-3 | -0.56u | -9.3% | 3-3 | 3-3-0 |
| April | 26 | 13-13 | -3.77u | -14.5% | 10-16 | 12-14-0 |
| May | 28 | 15-13 | -2.02u | -7.2% | 11-17 | 12-15-1 |
| June | 27 | 13-14 | -4.57u | -16.9% | 12-15 | 15-10-2 |
| July | 24 | 9-15 | -7.11u | -29.6% | 8-16 | 13-7-4 |
| August | 27 | 11-16 | -4.46u | -17.2% | 10-16 | 15-12-0 |
| September | 24 | 12-12 | -3.22u | -13.4% | 8-16 | 16-6-2 |
Mariners record against every opponent, 2026
Sorted by number of meetings. Each opponent links to its own betting record page.
| Opponent | Games | Record | ML units | Run line | O/U/P |
|---|---|---|---|---|---|
| Athletics | 13 | 6-7 | -2.63u | 5-8 | 10-3-0 |
| Houston Astros | 13 | 10-3 | +4.61u | 8-5 | 8-4-1 |
| Los Angeles Angels | 13 | 7-6 | -1.93u | 6-7 | 9-4-0 |
| Texas Rangers | 13 | 5-8 | -3.90u | 5-8 | 6-6-1 |
| Baltimore Orioles | 7 | 4-3 | +0.07u | 3-4 | 3-2-2 |
| Cleveland Guardians | 7 | 3-4 | -1.73u | 4-3 | 4-3-0 |
| Boston Red Sox | 6 | 3-3 | -0.04u | 4-2 | 4-2-0 |
| Chicago White Sox | 6 | 3-3 | -0.96u | 2-4 | 2-3-1 |
| Detroit Tigers | 6 | 2-4 | -2.51u | 3-3 | 4-2-0 |
| Kansas City Royals | 6 | 1-5 | -4.17u | 1-5 | 2-4-0 |
| Minnesota Twins | 6 | 4-2 | +0.87u | 2-4 | 4-2-0 |
| New York Yankees | 6 | 2-4 | -0.41u | 2-3 | 2-4-0 |
| San Diego Padres | 6 | 0-6 | -6.00u | 0-6 | 3-3-0 |
| Tampa Bay Rays | 6 | 1-5 | -3.71u | 2-4 | 2-3-1 |
| Toronto Blue Jays | 6 | 2-4 | -2.50u | 2-4 | 2-4-0 |
| Arizona Diamondbacks | 3 | 3-0 | +1.98u | 1-2 | 1-2-0 |
| Atlanta Braves | 3 | 2-1 | +0.41u | 1-2 | 1-2-0 |
| Chicago Cubs | 3 | 2-1 | +0.80u | 1-2 | 3-0-0 |
| Cincinnati Reds | 3 | 1-2 | -1.36u | 1-2 | 1-1-1 |
| Colorado Rockies | 3 | 2-1 | +0.14u | 0-3 | 0-3-0 |
| Los Angeles Dodgers | 3 | 1-2 | -0.07u | 1-2 | 1-2-0 |
| Miami Marlins | 3 | 0-3 | -3.00u | 1-2 | 2-1-0 |
| Milwaukee Brewers | 3 | 1-2 | -0.92u | 1-2 | 3-0-0 |
| New York Mets | 3 | 2-1 | +0.46u | 1-2 | 2-1-0 |
| Philadelphia Phillies | 3 | 2-1 | +0.96u | 2-1 | 1-2-0 |
| Pittsburgh Pirates | 3 | 1-2 | -1.24u | 0-3 | 1-2-0 |
| San Francisco Giants | 3 | 2-1 | +0.11u | 1-2 | 1-0-2 |
| St. Louis Cardinals | 3 | 3-0 | +2.26u | 1-2 | 1-2-0 |
| Washington Nationals | 3 | 1-2 | -1.31u | 1-2 | 3-0-0 |
Last 15 Mariners games with closing lines
| Date | Opponent | Result | Close ML | Run line | Total | O/U | ML units |
|---|---|---|---|---|---|---|---|
| Sep 27 | vs Angels | W 7-3 | -166 | -1.5 | 7 | Over | +0.60u |
| Sep 26 | vs Angels | W 8-4 | -163 | -1.5 | 7 | Over | +0.61u |
| Sep 25 | vs Angels | L 5-7 | -115 | +1.5 | 6.5 | Over | -1.00u |
| Sep 24 | vs Angels | L 4-6 | -198 | -1.5 | 7 | Over | -1.00u |
| Sep 23 | vs Astros | W 6-5 | -130 | -1.5 | 7.5 | Over | +0.77u |
| Sep 22 | vs Astros | L 0-7 | -132 | -1.5 | 7 | Push | -1.00u |
| Sep 20 | at Rockies | W 2-1 | -163 | -1.5 | 11 | Under | +0.61u |
| Sep 19 | at Rockies | L 3-5 | -149 | -1.5 | 10.5 | Under | -1.00u |
| Sep 18 | at Rockies | W 5-4 | -191 | -1.5 | 10.5 | Under | +0.52u |
| Sep 16 | at Angels | W 7-2 | -131 | -1.5 | 8 | Over | +0.76u |
| Sep 15 | at Angels | L 1-2 | -167 | -1.5 | 8 | Under | -1.00u |
| Sep 14 | at Angels | L 4-6 | -108 | -1.5 | 7.5 | Over | -1.00u |
| Sep 13 | at Athletics | L 7-8 | -131 | -1.5 | 9 | Over | -1.00u |
| Sep 12 | at Athletics | W 19-1 | -155 | -1.5 | 9.5 | Over | +0.65u |
| Sep 11 | at Athletics | L 5-6 | -167 | -1.5 | 10.5 | Over | -1.00u |
Close ML is the Mariners' closing moneyline. The run line is shown from the Mariners' side.
Mariners betting FAQ
What is the Mariners betting record in 2026?
76-86 straight up, -25.71u betting 1 unit on every game at the closing moneyline, 62-99 on the run line and 86-67-9 on totals (the 2026 regular season).
Are the Mariners profitable to bet at home or on the road?
At home they were 43-38 for -8.07u; on the road 33-48 for -17.64u in 2026.
How do the Mariners do as a favorite and as an underdog?
As a favorite: 62-61, -17.83u. As an underdog: 14-24, -7.88u.
Do Mariners games go over or under?
In 2026 their games were 86-67-9 against the closing total, with an average total of 7.80 runs and 8.56 actual runs per game.
What was the Mariners' best betting season since 2016?
2021: 90-72 for +36.68u. The worst was 2026: 76-86 for -25.71u. Over all 11 seasons they are 865-809, -4.95u.
Methodology
Results and closing lines come from the Bet Legend game database: final scores for every regular season game since 2016, with the closing moneyline, run line and total. Every game is checked against ESPN's official schedule and final score; postseason games are excluded. Moneyline units risk 1 unit per game at the close, so a win at -150 pays +0.67u and a win at +130 pays +1.30u. The run line record compares the final margin with the closing line (MLB run lines are 1.5 runs, so there are no pushes). Over and under results compare total runs with the closing total; an exact match is a push. 2026 figures run through Sep 27, 2026.
Some past seasons are missing a game or two that has no closing line on file or did not match ESPN's final score, so those games are left out: 2020: 54 of 60 games.
These are market results for the team, not BetLegend picks. Our own graded picks are on the MLB betting record page.