Park factor history
Five single seasons and the 2024 to 2026 view Baseball Savant shows by default. Reading them side by side is how you tell a park that has changed from a park that had one odd year.
| Season | wOBA | Runs | HR | SO | 2B | 3B | BB |
|---|---|---|---|---|---|---|---|
| 2026 | 93 | 86 | 107 | 114 | 81 | 22 | 93 |
| 2025 | 91 | 83 | 98 | 113 | 95 | 31 | 95 |
| 2024 | 89 | 79 | 89 | 122 | 80 | 58 | 97 |
| 2023 | 93 | 86 | 94 | 113 | 91 | 69 | 95 |
| 2022 | 93 | 86 | 108 | 110 | 86 | 50 | 92 |
| 2024 to 2026 | 92 | 85 | 98 | 117 | 85 | 36 | 95 |
The ballpark itself
Essentially at sea level, 10 feet, where heavy air and any marine influence work against carry. Home plate points northeast toward centre field, at 49.0 degrees, which is what turns a wind forecast into a blowing out or blowing in read rather than a guess. The roof is listed as retractable in the MLB venue record, so the run environment changes with the roof call. Playing surface is grass. The average fence sits 367 feet from the plate, 4 feet shallower than the league average, and the average wall is 7.6 feet high.
| Location | Distance | vs league | Wall | vs league |
|---|---|---|---|---|
| Left field line | 331 ft | -0 | 7.7 ft | -2.2 |
| Left centre gap | 379 ft | -1 | 7.7 ft | -2.3 |
| Centre field | 401 ft | -1 | 7.7 ft | -1.0 |
| Right centre gap | 382 ft | +3 | 7.7 ft | -1.4 |
| Right field line | 327 ft | -0 | 7.6 ft | -3.5 |
Where it ranks
| Index | Value | Rank | vs average |
|---|---|---|---|
| Runs | 85 | 29th of 29 | -15 |
| Home runs | 98 | 19th of 29 | -2 |
| Strikeouts | 117 | 1st of 29 | +17 |
| wOBA | 92 | 29th of 29 | -8 |
| Hits | 90 | 29th of 29 | -10 |
| Singles | 91 | 28th of 29 | -9 |
| Doubles | 85 | 28th of 29 | -15 |
| Triples | 36 | 29th of 29 | -64 |
| Walks | 95 | 26th of 29 | -5 |
| Hard hit rate | 98 | 25th of 29 | -2 |
Splits that move a number
| Split | Runs | HR | wOBA | SO |
|---|---|---|---|---|
| Right handed batters | 81 | 98 | 90 | 120 |
| Left handed batters | 86 | 98 | 93 | 113 |
| Split | Runs | HR | wOBA | SO |
|---|---|---|---|---|
| Day games | 86 | 94 | 93 | 114 |
| Night games | 83 | 100 | 91 | 118 |
| Split | Runs | HR | wOBA |
|---|---|---|---|
| Roof open | 83 | 99 | 91 |
| Roof closed | 88 | 96 | 94 |
Scoring at this ballpark in 2026
The index numbers above are league adjusted and cover three seasons. This is the raw scoring that actually happened here this year, which is the sanity check on all of it.
| Month | Games | Runs/gm | vs league |
|---|---|---|---|
| March | 6 | 7.17 | -1.80 |
| April | 11 | 9.18 | +0.22 |
| May | 15 | 7.20 | -1.76 |
| June | 11 | 6.91 | -2.05 |
| July | 11 | 6.45 | -2.51 |
| August | 14 | 8.64 | -0.32 |
| September | 7 | 8.71 | -0.25 |
| Date | Matchup | Final | Total | Start |
|---|---|---|---|---|
| 2026-09-10 | Texas Rangers at Seattle Mariners | 3–4 | 7 | Day |
| 2026-09-09 | Texas Rangers at Seattle Mariners | 2–3 | 5 | Day |
| 2026-09-08 | Texas Rangers at Seattle Mariners | 10–5 | 15 | Night |
| 2026-09-06 | Athletics at Seattle Mariners | 0–2 | 2 | Day |
| 2026-09-05 | Athletics at Seattle Mariners | 6–2 | 8 | Night |
| 2026-09-04 | Athletics at Seattle Mariners | 7–6 | 13 | Night |
| 2026-09-03 | Athletics at Seattle Mariners | 7–4 | 11 | Night |
| 2026-08-26 | Philadelphia Phillies at Seattle Mariners | 6–0 | 6 | Day |
| 2026-08-25 | Philadelphia Phillies at Seattle Mariners | 1–4 | 5 | Night |
| 2026-08-24 | Philadelphia Phillies at Seattle Mariners | 2–9 | 11 | Night |
What it means for a bet
Totals
A genuine run suppressor, and the under is priced accordingly. The profitable version is usually the first five innings, where the park effect is strongest and the bullpen has not had a say yet.
Home run props
Home runs outrun overall scoring here by 13 index points. That is the signature of a park that gives up damage in bursts: quiet innings and then a three run swing. Home run props and team total overs read better than the game total.
Strikeout props
A strikeout index of 117 means the park is quietly adding Ks. A starter arriving from a contact friendly park is usually priced on his season line, not on tonight's venue.
Roof
With the roof open the run index is 83, closed it is 88, a 5 point swing. The roof decision is public before first pitch and the total does not always move with it.
Every index on this page is a 2024 to 2026 figure unless the column says otherwise, and all of it is league relative: 100 is average, not neutral in an absolute sense. Park factors describe the venue, not tonight's pitching matchup, and they are the starting point of a number rather than the whole of it.