MLB Ballpark Factors
How every park plays, ranked by run factor (1.00 is league average). Tap a park for its full profile: home run and strikeout factors, run scoring by temperature, and the home record.
Run scoring by temperature
How many runs a game produces at each game-time temperature. Temperature is the one weather signal wired into our totals model — warmer air carries the ball — so this is the descriptive history behind it. League-wide, one row per game.
Cold
Below 55°F
8.17
avg total runs
Over (vs line) —
368 games
Mild
55–69°F
8.57
avg total runs
Over (vs line) 57.4%
1,642 games
Warm
70–82°F
8.8
avg total runs
Over (vs line) 46.5%
3,604 games
Hot
83°F+
9.6
avg total runs
Over (vs line) 44.6%
1,284 games
Descriptive history, not a betting edge — over/under is close to market-efficient.
Every park, by run factor
| # | Ballpark | Games | Run factor | HR factor |
|---|---|---|---|---|
| 1 | Coors Field | 224 | 1.27 | 1.15 |
| 2 | Sutter Health Park | 138 | 1.20 | 1.30 |
| 3 | Chase Field | 225 | 1.12 | 0.97 |
| 4 | Nationals Park | 225 | 1.10 | 1.03 |
| 5 | Citizens Bank Park | 232 | 1.05 | 1.12 |
| 6 | Dodger Stadium | 178 | 1.05 | 1.28 |
| 7 | Target Field | 227 | 1.05 | 0.97 |
| 8 | loanDepot park | 227 | 1.02 | 0.87 |
| 9 | Fenway Park | 227 | 1.01 | 0.87 |
| 10 | Oriole Park at Camden Yards | 231 | 1.01 | 1.12 |
| 11 | Yankee Stadium | 234 | 1.01 | 1.19 |
| 12 | Rogers Centre | 238 | 1.01 | 1.04 |
| 13 | Citi Field | 230 | 1.01 | 1.02 |
| 14 | PNC Park | 228 | 1.00 | 0.81 |
| 15 | Great American Ball Park | 229 | 1.00 | 1.11 |
| 16 | Angel Stadium | 227 | 0.99 | 1.02 |
| 17 | George M. Steinbrenner Field | 81 | 0.99 | 1.12 |
| 18 | Minute Maid Park | 83 | 0.99 | 1.11 |
| 19 | Daikin Park | 148 | 0.98 | 1.11 |
| 20 | Rate Field | 145 | 0.98 | 0.99 |
| 21 | Oakland Coliseum | 81 | 0.98 | 0.84 |
| 22 | Comerica Park | 228 | 0.97 | 0.97 |
| 23 | Kauffman Stadium | 229 | 0.97 | 0.85 |
| 24 | American Family Field | 238 | 0.96 | 0.96 |
| 25 | Truist Park | 227 | 0.96 | 1.01 |
| 26 | Oracle Park | 224 | 0.95 | 0.76 |
| 27 | Wrigley Field | 230 | 0.95 | 1.04 |
| 28 | UNIQLO Field at Dodger Stadium | 65 | 0.94 | 1.04 |
| 29 | Busch Stadium | 227 | 0.94 | 0.76 |
| 30 | Progressive Field | 235 | 0.94 | 0.92 |
| 31 | Petco Park | 230 | 0.92 | 0.98 |
| 32 | Tropicana Field | 147 | 0.92 | 1.00 |
| 33 | Guaranteed Rate Field | 81 | 0.89 | 0.89 |
| 34 | Globe Life Field | 226 | 0.87 | 0.92 |
| 35 | T-Mobile Park | 232 | 0.85 | 1.00 |
Run factor above 1.00 favors hitters, below favors pitchers. Updated each day from completed games.