Seattle Mariners As Favorite Betting Trend
ATS Record, ROI Analysis & Historical Performance Data (2014-2024)
The data suggests caution when backing the Seattle Mariners in this spot. Since 2014, when playing as as favorite, the Seattle Mariners are just 73-340-0 against the spread. That's a 0.0% win rate and a -66.3% ROI. Sharp bettors have found value fading this situation—the opposite side would have returned +66.3%.
Year-by-Year Performance
| Season | Record | Win % | ROI |
|---|---|---|---|
| 2014 | 13-19-0 | 0.0% | -22.4% |
| 2015 | 6-28-0 | 0.0% | -66.3% |
| 2016 | 6-40-0 | 0.0% | -75.1% |
| 2017 | 5-39-0 | 0.0% | -78.3% |
| 2018 | 10-31-0 | 0.0% | -53.4% |
| 2019 | 5-24-0 | 0.0% | -67.1% |
| 2020 | 4-26-0 | 0.0% | -74.5% |
| 2021 | 11-29-0 | 0.0% | -47.5% |
| 2022 | 4-34-0 | 0.0% | -79.9% |
| 2023 | 6-28-0 | 0.0% | -66.3% |
| 2024 | 3-42-0 | 0.0% | -87.3% |
Why This Trend Exists
The Mariners' catastrophic performance as favorites stems from a franchise-wide psychological fragility that manifests most acutely when expectations are elevated. Seattle has historically struggled with the weight of being favored, often playing tight and conservative baseball when they should be aggressive. This mental burden becomes particularly pronounced given the organization's playoff drought history and the pressure that comes with rare moments of optimism in the Pacific Northwest. The team's roster construction has consistently favored defensive-minded players and pitching depth over explosive offensive talent, creating a profile that excels as underdogs but crumbles when forced to dictate pace. When favored, opposing teams can afford to be more aggressive on the basepaths and at the plate, knowing Seattle's conservative approach will rarely punish mistakes. The Mariners' bullpen, while often solid on paper, has repeatedly failed in high-leverage situations when protecting leads they're expected to maintain. Smart bettors should view Seattle favorites as automatic fade opportunities, particularly in home games where fan expectations amplify the psychological pressure. This trend becomes most critical during stretches when the Mariners show signs of competitiveness, as the betting market often overadjusts to recent success while ignoring the franchise's deeply ingrained mental barriers.
Frequently Asked Questions
What is the Seattle Mariners's ATS record as as favorite?
The Seattle Mariners have a 73-340-0 ATS record when favored from 2014-2024, covering the spread in only 73 of 413 games. This represents an extremely poor 17.7% ATS win rate as favorites.
Is betting on the Seattle Mariners as as favorite profitable?
No, betting on the Seattle Mariners as favorites has been highly unprofitable with a -66.3% ROI from 2014-2024. This means bettors would have lost approximately 66 cents for every dollar wagered on Seattle when they were favored.
How does this compare to the league average?
This performance is significantly worse than the league average, as MLB favorites typically cover around 48-52% of the time. The Mariners' 17.7% ATS rate as favorites represents one of the worst such records in recent MLB history.
FADE This Trend
The data suggests fading this situation has been profitable. Compare odds to find the best value on the other side.
Compare Sportsbook OddsMethodology
All trends in The Archives are calculated from official game results and closing point spreads from 2014 to 2024. ROI assumes a flat $100 bet at standard -110 juice. Win rate is calculated as wins divided by total decisions (pushes excluded). A minimum of 10 games is required for a trend to be published. Data is sourced from The Odds API and verified against official league records.