The public often underestimates the Seattle Mariners in this spot. Since 2014, when playing as home underdog, the Seattle Mariners hold a record of 187-43-1 against the spread. That's a 0.0% win rate and a +55.2% return on investment—meaning a bettor wagering $100 per game would be up $128 over this period.

🔥 Elite Edge
Record187-43-1
Win Rate0.0%
Sample Size231 games
ROI+55.2%
Units Won+127.0u
Time Period2014-2024

Year-by-Year Performance

SeasonRecordWin %ROI
201415-5-00.0%+43.2%
201527-3-00.0%+71.8%
201616-1-00.0%+79.7%
201712-5-00.0%+34.8%
201811-6-00.0%+23.5%
201921-5-00.0%+54.2%
202014-3-00.0%+57.2%
202120-5-10.0%+52.7%
202213-4-00.0%+46.0%
202319-4-00.0%+57.7%
202419-2-00.0%+72.7%

Why This Trend Exists

The Mariners' exceptional performance as home underdogs stems from their unique position in baseball's competitive landscape and T-Mobile Park's distinctive characteristics. Seattle has historically been overlooked by oddsmakers despite possessing solid fundamentals, creating consistent value opportunities when books underestimate their home-field advantages. T-Mobile Park's marine layer and expansive foul territory significantly impact game dynamics, particularly benefiting Mariners pitchers who understand how to exploit these conditions. The ballpark's dimensions favor contact hitters and defensive positioning, areas where Seattle has traditionally excelled even during rebuilding phases. When books set the Mariners as home underdogs, they often fail to adequately account for these environmental factors that visiting teams struggle to adjust to quickly. The psychological element cannot be ignored either. Seattle's passionate fanbase creates an electric atmosphere when the team is positioned as the underdog, particularly against marquee opponents. This energy translates into clutch performances and late-game heroics that often swing close contests in the Mariners' favor. Smart bettors should target this trend most aggressively during interleague play and against AL East opponents, when the perception gap between Seattle and visiting teams tends to be largest, creating the most inflated underdog prices.

Frequently Asked Questions

What is the Seattle Mariners's ATS record as home underdog?

The Seattle Mariners have an outstanding 187-43-1 ATS record as home underdogs from 2014-2024. This represents one of the most dominant ATS trends in baseball over the past decade.

Is betting on the Seattle Mariners as home underdog profitable?

Yes, betting on the Seattle Mariners as home underdogs has been extremely profitable with a 55.2% ROI from 2014-2024. This means a $100 bettor would have earned $55.20 in profit for every $100 wagered on this trend.

How does this compare to the league average?

This performance significantly outpaces the league average, as most teams struggle to cover spreads consistently as underdogs. The Mariners' 81.2% ATS win rate in this situation is exceptionally rare in professional sports betting.

BACK This Trend

This trend shows a historically profitable pattern. Compare odds across sportsbooks to find the best line.

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Methodology

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.