Fantasy Index

Fantasy Baseball Index

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.

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

Venue Team Runs HR Hits K BB LHB H LHB HR RHB H RHB HR
Oriole Park at Camden Yards Baltimore Orioles N P H H PP H HH H P
George M. Steinbrenner Field Tampa Bay Rays H HHH P P HH P HHH N HHH
Sutter Health Park The Athletics 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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