How is the park factor measured?

From 232 games at T-Mobile Park in our database, rebuilt nightly. A run factor of 1.00 is league average; above 1.00 means more runs than a neutral park, below means fewer.

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MLB · Park Factors

T-Mobile Park

Q: Is T-Mobile Park a hitter's park or a pitcher's park?

T-Mobile Park plays as a strong pitcher's park. Games there average 7.52 total runs versus a league average of 9.02, a run factor of 0.85.

T-Mobile Park plays as a strong pitcher's park. Games there average 7.52 total runs versus a league average of 9.02, a run factor of 0.85, which ranks #35 of 35 MLB parks for scoring.

Run factor

0.85

-15%

runs vs average

HR factor

1.00

home runs vs average

Strikeout factor

1.13

+13%

strikeouts vs average

Run in the 1st

41%

of games here see a first-inning run

A run factor of 0.85 means T-Mobile Park yields about -15% the runs of a neutral park. The home run factor (0%) tells you how much of that comes from the ball leaving the yard, which is the part altitude, dimensions and wind swing the most.

Run scoring by temperature, at T-Mobile Park

Average total runs by game-time temperature here.

Cold (under 55°F)

6.4

Mild (55-70°F)

8.1

Warm (70-83°F)

7.1

Hot (83°F+)

8.5

The home team wins 59.5% of games at T-Mobile Park, across 232 games. Run environment and home success are separate questions: a park can inflate scoring without helping the home side win, which is exactly the story at the most extreme hitters' parks.

How we counted

From 232 games at T-Mobile Park in our database, rebuilt nightly. Factors are normalized so 1.00 equals the league-average park. Descriptive history, not a prediction, and it updates on its own.

Last recomputed August 23, 2026.

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All ballpark factors → Does weather affect scoring? →

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