Most Hitter-Friendly
Most Pitcher-Friendly
Run Factor Rankings
All 30 parks ranked by run production factor. Blue = pitcher parks, green = hitter parks.
Betting with Park Factors
How to apply ballpark data to find edges
Over/Under Totals
Park factors directly impact game totals. Coors Field (+20% runs) heavily favors overs, while Oracle Park (-10% runs) suppresses scoring significantly. Always compare the market total to the park's expected impact.
Home Run Props
HR factors vary independently from run factors. Great American Ball Park (+20% HR) is the most HR-friendly, while Oracle Park (-18% HR) heavily suppresses them. Target HR overs in high-HR parks, especially with pull hitters.
Altitude + Weather Stack
High-altitude parks (Coors at 5,280', Chase at 1,100') get an additional boost on hot days when air density drops further. Stack park factor with game-time weather for the sharpest edge. Wind blowing out at Wrigley is a classic over spot.
Surface Type Edge
Turf fields (TOR, TBR, TEX, ARI) play faster with more groundball singles and extra-base hits. This affects hit totals and player props -- speed-oriented lineups get a boost on turf.
Dome/Roof Advantage
Closed roofs eliminate wind as a factor, making games more predictable. When Minute Maid or Chase Field has the roof closed, focus purely on park factor -- no weather adjustment needed.
Factor Splits Matter
Some parks split differently. Fenway boosts hits (+15%) but suppresses HRs (-2%) due to the Green Monster. Yankee Stadium is average on hits (+2%) but extreme on HRs (+15%). Match the factor type to the bet type.
Park factors are based on multi-year run, HR, and hit data normalized against league averages. Factors can shift year-to-year. For entertainment purposes only -- always gamble responsibly.