FILE – The Detroit Tigers logo is seen during a rain delay at Game 4 of the American League championship series against the New York Yankees Wednesday, Oct. 17, 2012, in Detroit. (AP Photo/Paul Sancya, File)
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Yesterday and today in this space, I’m summarizing my 2025 batted ball-based park factors. As I do in my other analysis here, I took all batted balls and compared actual performance to projections based on the application of MLB average production to each exit speed/launch angle “bucket”. A park that didn’t impact actual projection at all would receive a 100 park factor; those that inflated projected production get a higher mark, those that deflated get a lower one.
Unlike most park factors, I use one year worth of data, not two or more. The granular nature of the data being utilized tends to smooth things out and yield very reliable results. On a year-to-year basis (2025 vs. 2024), my overall park factors had a 0.59 correlation coefficient, down a bit from the past two seasons. Fly ball park factors had the lowest correlation of the past decade (0.46). Base hit types also correlate pretty closely – singles (0.42), doubles (0.60), triples (0.78) and homers (0.51). A big reason correlation coefficients declined somewhat this year – there were first-year MLB parks in place for both the Athletics and Rays, and they were both fairly extreme hitters’ parks.
Liners and grounders don’t typically correlate as closely as fly balls, but at 0.27 and 0.46, respectively, their coefficients were more in line with historical norms.
We tackled the more pitcher-friendly half of the 30 MLB parks yesterday, and are running down the hitter-friendly ones today.
#15 – Chase Field (Diamondbacks) – 100.0 Overall Park Factor, 98.1 Fly Ball (18th), 96 Home Run (20th)
Chase Field has typically been a slightly hitter-friendly park that is pretty stingy with home runs but has allowed more than its share of doubles and triples. Its 2025 doubles park factor of 110 was the 5th highest in MLB, and its 210 triples factor was the highest. Chase has posted a 100-plus homer park factor exactly once in the decade-plus I’ve been using this method, posting a sub-100 doubles park factor once and never posting a sub-100 triples park factor over that span
#14 – Rogers Centre (Blue Jays) – 100.1 Overall Park Factor, 104.4 Fly Ball (15th), 108 Home Run (8th)
The home of the Jays has typically been a neutral offensive park that has allowed more than its share of home runs. 2025 marked the ninth consecutive season that its overall park factor has been in the league average range. However, it also marked the ninth straight year (and 12th in the 13 years I’ve used this method) that its homer park factor has exceeded 100. On the flip side, this was the 12th time in 13 years that it recorded a sub-100 singles park factor.
#13 – Oracle Park (Giants) – 101.9 Overall Park Factor, 101.4 Fly Ball (16th), 86 Home Run (25th)
Oracle used to be one of the most extreme pitcher-friendly parks in the game, but has been much more neutral in recent seasons. It remains very homer-averse – it has posted a homer park factor above 90 only once since I’ve been using this method. It’s the only bottom half homer park to post 100-plus singles (104), doubles (107) and triples (122) park factors this season, and has topped 100 in those areas fairly regularly.
#12 – Target Field (Twins) – 102.3 Overall Park Factor, 99.1 Fly Ball (17th), 96 Home Run (21st)
Target Field is a less extreme version of Oracle Park – it’s somewhat stingy on homers, but compensates by giving a bit on singles and doubles. It’s only posted a 100-plus homer park factor once since 2014 (101 in 2024), though it has now posted a 100-plus overall park factor for three straight seasons. Its singles park factor (104 in 2025) has been below 100 only once since I’ve been using this method, its doubles park factor (104 in 2025) has been below 100 three times over that span.
#11 – Oriole Park at Camden Yards (Orioles) – 104.5 Overall Park Factor, 108.4 Fly Ball (10th), 108 Home Run (10th)
After three years of hindering fly ball production, the left field fence in Baltimore was moved in and shortened in height, with immediate offense-inflating effects, It regained its former personality as a somewhat neutral overall but homer-friendly park. In the three seasons with the larger dimensions, Oriole Park posted fly ball park factors of 86.0, 79.6 and 91.0 – the 2025 mark almost exactly matches the 108.2 2021 fly ball park factor, when the fences were much closer to where they are now
#10 – Dodger Stadium (Dodgers) – 104.9 Overall Park Factor, 117.5 Fly Ball (6th), 124 Home Run (1st)
Dodger Stadium has typically been a somewhat neutral park that has been vulnerable to the home run ball while suppressing hits of all other types. It took that persona to an extreme in 2025. It has never posted a sub-100 homer park factor since I’ve been using this method, but this season marked an all-time high and the first time that it has taken the top spot in all of MLB. Its singles park factor of 93, on the other hand, tied for the lowest in MLB – it has posted a sub-100 mark in that category for 13 straight seasons.
#9 – Angel Stadium of Anaheim (Angels) – 105.0 Overall Park Factor, 109.1 Fly Ball (9th), 111 Home Run (7th)
Angel Stadium has behaved similarly to but in a less extreme manner than nearby Dodger Stadium, a neutral to slightly hitter-friendly park that allows more than its share of homers while suppressing other types of offense. Its 2025 overall park factor is its highest since I’ve been using this method. Its homer park factor has now been over 100 for eight straight seasons, and its 2025 mark narrowly missed its high over that span (112 in 2024). Its doubles park factor (92 in 2025) has exceeded 100 only once since 2013, and that was in the pandemic-shortened 2020 season.
#8 – Steinbrenner Field (Rays) – 106.0 Overall Park Factor, 112.4 Fly Ball (6th), 120 Home Run (3rd)
Hurricane damage forced the Rays out of Tropicana Field and into the Yankees’ Low-A ballpark in 2025. It turned out to be one of the most homer-friendly parks in the game, and graded out as a hitters’ park overall despite deflating doubles (85 park factor) more than any other MLB park. 42.4% of 100-105 mph fly balls left the yard here, well above the MLB average of 33.5%. Repairs to Tropicana Field (a reliably grounder-friendly park) are expected to be complete for Opening Day 2026, so this will go down as a one-off on the historical record.
#7 – Comerica Park (Tigers) – 106.3 Overall Park Factor, 107.1 Fly Ball (12th), 106 Home Run (11th)
This place used to reliably be one of the most pitcher-friendly parks in the game. No more. Prior to the 2023 season, the center field fence was moved in substantially, and the walls were lowered from center field to the right field corner. Impacts were gradual and relatively minimal in 2023-24, but were significant this season. This marked the first 100-plus overall park factor since 2014 and the first 100-plus fly ball park factor since 2013. It also marked a second straight season with a 100-plus homer park factor after never reaching that level previously.
#6 – American Family Field (Brewers) – 106.5 Overall Park Factor, 107.4 Fly Ball (11th), 108 Home Run (9th)
One could basically say that the dimension changes in Detroit successfully transformed that formerly pitcher-friendly yard into the home of the Brewers. Both parks’ overall, fly ball and homer park factors were virtually identical in 2025. Of course, the retractable roof is in play in Milwaukee, and is used quite liberally, especially early in the season. This place is reliably homer-friendly – its homer park factor has been over 100 every year since I began using this method. This, however, was its highest overall park factor since 2017.
#5 – Great American Ball Park (Reds) – 107.1 Overall Park Factor, 110.8 Fly Ball (7th), 114 Home Run (6th)
An “off” year for one of the game’s most extremely hitter-friendly ball parks. Its overall park factor was its lowest since 2015. Its fly ball park factor was its lowest since 2013. Its homer park factor was its lowest since I’ve been using this method. Honestly, this is about as pitcher-friendly as this place can be. As recently as 2022 it beat out Coors Field for the title of MLB’s most hitter-friendly park.
#4 – Daikin Park (Astros) – 108.7 Overall Park Factor, 120.1 Fly Ball (4th), 114 Home Run (4th)
Formerly known as Minute Maid Park, this has long been known as the home of the cheap home run. There were 88 90-95 mph fly ball homers in all of baseball this season – 13 of them were hit here. This place has posted a sub-100 fly ball or homer park factor once since 2013. It does compensate in other ways – it’s actually posted the lowest average line drive park factor since this method was introduced.
#3 – Citizens Bank Park (Phillies) – 112.7 Overall Park Factor, 122.2 Fly Ball (3rd), 114 Home Run (5th)
The home of the Phillies has settled in at the very top of the non-extreme portion of the reliably hitter-friendly park list. It has been consistently fly ball-friendly, posting 100-plus park factors in that area for nine straight seasons, and 112-plus for each of the last five. Its home run park factor has now been over 100 for 11 consecutive seasons. It’s also typically been an above average singles, doubles and triples park, with marks of 105, 101 and 101 in those departments in 2025.
#2 – Sutter Health Park (Athletics) – 119.6 Overall Park Factor, 138.2 Fly Ball (2nd), 123 Home Run (2nd)
And here’s our other temporary home, along with Steinbrenner Field, that inflated run-scoring in 2025. And the A’s current home will be sticking around a little longer. It’s a worthy competitor to Coors Field for the title of MLB’s most hitter-friendly yard. It’s much more homer-friendly than Coors, and its doubles park factor (122) actually nosed out Coors’ (120) for the MLB lead in that category. 46.9% of 100-105 mph fly balls left the yard here, another MLB high.
#1 – Coors Field (Rockies) – 125.7 Overall Park Factor, 142.7 Fly Ball (1st), 106 Home Run (12th)
It’s fairly difficult to sum up exactly how hitter-friendly this place is, but I’ll try. Park factors like this are a zero-sum game. The introduction of the A’s and Rays temporary homes in place of their previous parks made it harder to put up a big, hitter-friendly park factor number in 2025. But Coors went ahead and up its second highest overall mark since I’ve been using this method (130.3 in 2017). This in a year when its fly ball park factor was unremarkable by its standards and its homer park factor was its second lowest over that span. How? Well, Coors was extremely vulnerable to liners and especially grounders (121.8 park factor, highest in MLB, over two standard deviations higher than league average). Its 109 singles park factor led the majors, its 120 doubles park factor ranked 2nd. And remember, the poor Rockies’ pitching staff has no impact here – batted balls “should have” resulted in a .328 AVG-.536 SLG here, not much higher than the MLB average. The actual results? .366 AVG-.604 SLG. Coors remains the king.