Analysis

February 23, 2025

MLB PARK FACTORS: PART TWO

A breakdown of the park factors for all 30 major league venues

Last time, a general overview of park factors was reported. In Part Two of this three-part series, the various indices for each venue will be unveiled. Next time, a thumbnail review of every venue will be provided.

Park factors are generally presented as numbers, with neutral being either 100 or 1. A factor over neutral means the venue favors hitting with anything under benefiting pitching.

The application of park factors is as follows. A batter is projected to hit 30 homers in a neutral park. If he plays the season in a venue with a HR factor of 108, his actual projection is 30 x 1.04 = 31.2 home runs.

The key is half of the games are on the road, so the factor is applied to only the home games, hence is cut in half.

Let's say this same better's home venue's HR park factor is 90. The math is 30 x .95 = 28.5 HR.

The assumption in both cases is the aggregate road venues park factors are neutral. Practically speaking, this is acceptable since projections aren't accurate enough to worry about the precision of the park factors. However, since it isn't hard to do with Excel, I calculate Composite Park Factors, where the index is a weighted average of all the parks comprising a team's schedule. Half (81 games) will be the home park with the others reflecting how many games each team plays against the rest of the league. When applying the factor in calculations, it doesn't half to be adjusted since it already accounts for the road affairs. In most cases, the composite factor matches the standard version, but I see it as a case of if I can refine it without extra burden, why not?

Composite factors can be more useful if they are determined on a "rest of season" basis. That is, before the season, when adjusting the projections, it is assumed players will play in an equal cross-section of the season-long composite factor. However, as the season progresses, the opposing parks change. If the in-season factors were based on the team's remaining schedule, they'd be more representative of how the locales will affect production.

The Fantasy Index 2025 Baseball Draft Kit uses composite park factors. Starting this season, the weekly rest-of-season projections will incorporate adjusted composite park factors.

Instead of numbers, the park factors for all 30 venues will be shown using a letter code:

P: Favors Pitching
N: Neutral
H: Favors Hitting

More letters indicate the extent of the effect. For those interested in the actual numbers, they are available through Statcast.

PARK FACTORS
Team	Venue	Runs	HR	Hits	K	BB	LHB H	LHB HR	RHB H	RHB HR
Arizona Diamondbacks	Chase Field	H	PPP	H	H	N	H	PPPP	HH	PP
Atlanta Braves	Truist Park	H	H	H	PP	P	H	P	H	H
Baltimore Orioles*	Oriole Park at Camden Yards	P	PP	H	H	PP	H	HH	H	PPPP
Boston Red Sox	Fenway Park	HH	P	HH	H	P	HHH	P	HH	P
Chicago Cubs	Wrigley Field	PP	PP	P	P	H	H	PPP	PP	P
Chicago White Sox	Rate Field	P	N	N	H	H	N	P	N	H
Cincinnati Reds	Great American Ball Park	HH	HHHH	H	P	H	H	HHHH	H	HHHH
Cleveland Guardians	Progressive Field	PP	PPP	P	H	P	H	P	PP	PPPP
Colorado Rockies	Coors Field	HHH	HH	HHH	HH	P	HHH	H	HHH	HHH
Detroit Tigers	Comerica Park	PP	PPP	P	H	P	P	PPP	P	PPP
Houston Astros	Daikin Park	H	H	N	P	H	N	HH	N	H
Kansas City Royals	Kauffman Stadium	HH	PPP	HH	HH	H	H	PPPP	HHH	PP
Los Angeles Angels	Angel Stadium	H	HH	P	PP	H	P	HH	P	HH
Los Angeles Dodgers	Dodger Stadium	N	HHH	P	P	P	P	HH	P	HHHH
Miami Marlins	LoanDepot Park	H	PP	H	H	P	HH	H	H	PPP
Milwaukee Brewers	American Family Field	PP	HH	PP	PPP	H	PP	HH	PP	HH
Minnesota Twins	Target Field	H	H	H	PP	H	H	H	H	H
New York Mets	Citi Field	PP	P	PP	P	HH	PP	PP	PP	H
New York Yankees	Yankee Stadium	N	HHH	PP	P	HH	PP	HH	P	HHHH
Philadelphia Phillies	Citizens Bank Park	H	HH	N	P	P	N	HHH	N	H
Pittsburgh Pirates	PNC Park	H	PPP	H	H	H	H	H	N	PPPPP
San Diego Padres	Petco Park	PP	H	PP	P	P	PP	PP	P	HH
San Francisco Giants	Oracle Park	PP	PPPP	N	H	PP	N	PPPP	N	PPPP
Seattle Mariners	T-Mobile Park	PPP	P	PP	PPP	P	PP	PP	PPP	N
St. Louis Cardinals	Busch Stadium	P	PP	H	HH	P	N	PPP	H	PP
Tampa Bay Rays**	Tropicana Field	PP	P	PP	PP	P	PP	PPP	P	H
Texas Rangers	Globe Life Field	H	HHH	N	P	H	H	HH	P	HHH
The Athletics***	Oakland–Alameda County Coliseum	PP	PPP	P	H	H	P	PPP	P	PPP
Toronto Blue Jays	Rogers Centre	N	H	N	H	P	P	PP	H	HH
Washington Nationals	Nationals Park	H	H	H	HH	P	HH	P	P	H

* The left field fence was brought in and lowered, but not to the extent it was before the 2023 renovation. The change will help right-handed power and render the park less pitcher friendly.

** The Rays will play their 2025 home games in George M. Steinbrenner Field in Tampa. The dimensions replicate Yankee Stadium but it is hotter and more humid in Tampa, so the park should play better for power, especially right-handed since the short right field wall already embellished left-handed power. The venue should play more hitter friendly than Yankee Stadium.

*** The Athletics will play their 2025 home schedule at Sutter Health Park in Sacramento. The dimensions are not an exact match, but they closely resemble The Coliseum. However, it is much warmer during the day (all the Sunday home games for the Athletics are matinees). Even though the temperatures are closer at night, in the aggregate, it should be warmer in Sacramento, aiding power. Additionally, there is far less foul territory, and a better batter's eye in Sutter Health Park, so it should play more hitter friendly than the Athletics old home.

ADJUSTED PARK FACTORS
Team	Venue	Runs	HR	Hits	K	BB	LHB H	LHB HR	RHB H	RHB HR
Baltimore Orioles	Camden Yards	N	P	H	H	PP	H	HH	H	P
Tampa Bay Rays	Steinbrenner Field	H	HHH	P	P	HH	P	HHH	N	HHH
The Athletics	Sutter Health Park	N	N	N	N	N	N	N	N	N

Part Three will be a blurb on each venue.

Todd Zola is an award-winning fantasy baseball writer and 2020 inductee into the Fantasy Sports Writers Hall of Fame. He's the content provider for the 2025 Fantasy Baseball Index Draft Kit and the Editor-in-Chief for the 2025 relaunch of the Fantasy Baseball Index magazine.

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