T-Mobile Park
MLB ballpark HR park factor + handedness splits
Why this park plays this way
Mariners home. Cold Seattle marine air + tall LF wall make this an extreme HR-suppressor. LHB hurt more than RHB. Even Julio Rodríguez has to work for HRs here. Fade home HR props at T-Mobile.
How to use park factor when betting MLB
Park factor is one of 12 factors in our HR model. It carries roughly 11% of total weight in the default profile — material, not dominant. Other big factors: batter power, batter Statcast quality, opposing pitcher HR vulnerability, weather.
For most parks, factor doesn't override a weak pitcher matchup — but extreme parks (Coors at 118, Oracle at 88) can swing a player's projected HR rate by 5+ percentage points. Pair an elite power bat with the right park and you're looking at our top 5 every time.
See which hitters our model loves at this park tonight
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