How is the park factor measured?

From 230 games at Chase Field 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

Chase Field

Q: Is Chase Field a hitter's park or a pitcher's park?

Chase Field plays as a strong hitter's park. Games there average 9.83 total runs versus a league average of 9.02, a run factor of 1.12.

Chase Field plays as a strong hitter's park. Games there average 9.83 total runs versus a league average of 9.02, a run factor of 1.12, which ranks #3 of 35 MLB parks for scoring.

Run factor

1.12

+12%

runs vs average

HR factor

0.96

-4%

home runs vs average

Strikeout factor

0.89

-11%

strikeouts vs average

Run in the 1st

55%

of games here see a first-inning run

A run factor of 1.12 means Chase Field yields about +12% the runs of a neutral park. The home run factor (-4%) 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 Chase Field

Average total runs by game-time temperature here.

Mild (55-70°F)

6.5

Warm (70-83°F)

9.8

Hot (83°F+)

10.1

The home team wins 54.3% of games at Chase Field, across 230 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 230 games at Chase Field 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 22, 2026.

Compare parks

Coors Field 1.27 Sutter Health Park 1.20 Guaranteed Rate Field 0.89 Globe Life Field 0.87

All ballpark factors → Does weather affect scoring? →

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