Nationals Park
Thursday · 12:05 PM
Day
COLAWAYGabriel Hughes(RHP)
6.54 ERA
HOME
WSH
WSHJake Irvin(RHP)
5.82 ERA
Park Factors
HR
+16%
1.16
XBH
+5%
1.05
HIT
+2%
1.02
2026 Factors · 3,503 Balls In Play
Open Air — Forecast Loads On Game Day
Tonight's Slate
Parks & Weather for Thursday, August 27, 2026
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How to Read This Page
Park Factors
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.
Three Metrics
HR — home run rate. XBH — extra-base hit rate (2B + 3B + HR). HIT — total hit rate (1B + 2B + 3B + HR).
Splits
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.
Why Numbers Look Conservative
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.
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COLAWAYBusch Stadium
Thursday · 1:15 PM
Day
BALAWAYTrevor Rogers(LHP)
4.14 ERA
HOME
STL
STLCooper Hjerpe(LHP)
Park Factors
HR
-20%
0.80
XBH
-7%
0.93
HIT
-1%
0.99
2026 Factors · 3,598 Balls In Play
Open Air — Forecast Loads On Game Day
Yankee Stadium
Thursday · 6:05 PM
Night
HOUAWAYHayden Wesneski(RHP)
4.23 ERA
HOME
NYY
NYYGerrit Cole(RHP)
3.11 ERA
Park Factors
HR
+14%
1.14
XBH
+6%
1.06
HIT
0%
1.00
2026 Factors · 2,995 Balls In Play
Open Air — Forecast Loads On Game Day
Rogers Centre
Thursday · 6:07 PM
RetractNight
KCAWAYNoah Cameron(LHP)
4.02 ERA
HOME
TOR
TORSpencer Arrighetti(RHP)
4.73 ERA
Park Factors
HR
-7%
0.93
XBH
-4%
0.96
HIT
-1%
0.99
2026 Factors · 3,397 Balls In Play
Retractable Roof — Forecast Loads On Game Day
Citi Field
Thursday · 6:10 PM
Night
MILAWAYJacob Misiorowski(RHP)
1.68 ERA
HOME
NYM
NYMSean Manaea(LHP)
4.31 ERA
Park Factors
HR
-2%
0.98
XBH
-2%
0.98
HIT
-1%
0.99
2026 Factors · 3,307 Balls In Play
Open Air — Forecast Loads On Game Day
Truist Park
Thursday · 6:15 PM
Night
LADAWAYYoshinobu Yamamoto(RHP)
2.61 ERA
HOME
ATL
ATLChris Sale(LHP)
2.20 ERA
Park Factors
HR
+4%
1.04
XBH
-1%
0.99
HIT
0%
1.00
2026 Factors · 3,423 Balls In Play
Open Air — Forecast Loads On Game Day
Oracle Park
Thursday · 8:45 PM
Night
ARIAWAYJose Cabrera(RHP)
5.60 ERA
HOME
SF
SFLanden Roupp(RHP)
4.34 ERA
Park Factors
HR
-13%
0.87
XBH
-5%
0.95
HIT
-3%
0.97
2026 Factors · 3,373 Balls In Play
Open Air — Forecast Loads On Game Day
About MLB Park Factors
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.
How to read it
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.
Where the numbers come from
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.
Who it's for
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.