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Tonight's Slate
A park factor of 1.00 means league-average for that metric. 1.18 means hitters HR (or get extra-base hits, or get hits) 18% more often there than at an average park. 0.92 means 8% less often.
Park factors reflect ballpark only — weather is shown separately and not included in these values.
HR — home run rate. XBH — extra-base hit rate (2B + 3B + HR). HIT — total hit rate (1B + 2B + 3B + HR).
Toggle between All Hitters, vs RHH, or vs LHH. Splits use hand-specific league denominators, so a LHH-friendly park (Yankee Stadium short porch) shows up clearly — not buried under combined averages.
Early-season factors get pulled toward neutral (1.00) until enough data accumulates. A genuinely +25% HR park will display as +13% in April and drift toward +25% as the season progresses. This avoids small-sample inflation that misleads users.
Monday · 5:40 PM
BOSAWAY
MIAPark Factors
HR
-13%
0.87
XBH
-3%
0.97
HIT
-2%
0.98
2026 Factors · 3,271 Balls In Play
Monday · 5:40 PM
TBAWAY
DETPark Factors
HR
-4%
0.96
XBH
-2%
0.98
HIT
-2%
0.98
2026 Factors · 3,136 Balls In Play
Monday · 5:45 PM
COLAWAY
WSHPark Factors
HR
+16%
1.16
XBH
+4%
1.04
HIT
+2%
1.02
2026 Factors · 3,407 Balls In Play
Monday · 6:40 PM
TEXAWAY
CWSPark Factors
HR
+2%
1.02
XBH
-1%
0.99
HIT
-2%
0.98
2026 Factors · 3,260 Balls In Play
Monday · 8:38 PM
CLEAWAY
LAAPark Factors
HR
-12%
0.88
XBH
-7%
0.93
HIT
-2%
0.98
2026 Factors · 3,101 Balls In Play
Monday · 8:40 PM
PHIAWAY
SEAPark Factors
HR
+6%
1.06
XBH
-3%
0.97
HIT
-2%
0.98
2026 Factors · 3,152 Balls In Play
Monday · 8:40 PM
PITAWAY
SDPark Factors
HR
-3%
0.97
XBH
-5%
0.95
HIT
-3%
0.97
2026 Factors · 3,291 Balls In Play
Monday · 8:40 PM
MINAWAY
ATHPark Factors
HR
+23%
1.23
XBH
+10%
1.10
HIT
+8%
1.08
2026 Factors · 3,454 Balls In Play
Monday · 8:40 PM
CHCAWAY
ARIPark Factors
HR
-7%
0.93
XBH
-1%
0.99
HIT
-1%
0.99
2026 Factors · 3,616 Balls In Play
Monday · 8:45 PM
CINAWAY
SFPark Factors
HR
-15%
0.85
XBH
-5%
0.95
HIT
-3%
0.97
2026 Factors · 3,221 Balls In Play
The run and home-run environment of every ballpark, applied to the day’s games. Park effects are one of the few genuinely large and genuinely stable inputs in baseball, and they are easy to forget once you are deep in a matchup.
A park factor above 100 means the venue plays friendlier than league average for that outcome; below 100 means it suppresses it. Run and home-run factors are shown separately because they diverge — a park can be a difficult place to hit a home run while still being a good place to score. Weather is layered on for the day’s games, since temperature and wind move carry meaningfully in open-air parks.
Park factors are multi-season figures, which is deliberate: a single season of home and road splits is far too small to separate the park from the roster that plays in it. Weather is forecast data that populates on game day and is unavailable for games further out.
For home-run and total-runs research, and as a sanity check on any hitter or pitcher read. It is also the input most likely to explain a matchup that looks good on paper but plays poorly in reality.