T-Mobile Park dimensions
Outfield wall distances at T-Mobile Park, home of the Seattle Mariners: 326 ft at its shortest and 401 ft at its deepest. 99% of the recent tracked sample is estimated to clear the fence here.
Tracked sample: 98 home runs, September 26, 2026–October 1, 2026. Coverage may be incomplete; these are not official season totals.
Distance-only estimate. We compare projected distance with each park’s fence at the same spray angle. Wall height, trajectory and weather are not modelled. These comparisons are not official park factors. How Donged works.
- 326 ftShortest porch
- 401 ftDeepest wall
- 99%Estimated to clear, recent sample
- 2Tracked HRs hit here
How T-Mobile Park compares
In this recent tracked sample, 99% of home runs are estimated to clear T-Mobile Park’s fence, compared with 97% averaged across the 30 parks. This comparison uses the same batted balls at each park and does not measure the chance of hitting a home run here.
About T-Mobile Park
Home of the Seattle Mariners since 1999. Heavy marine air and a retractable roof that acts as an umbrella rather than a dome. Perennially one of the most pitcher-friendly parks in MLB — the dense night air kills carry.
Outfield wall by spray angle
| Direction | Spray angle | Wall distance |
|---|---|---|
| Left-field line | -45° | 331 ft |
| Left field | -30° | 365 ft |
| Left-centre | -15° | 378 ft |
| Centre field | 0° | 401 ft |
| Right-centre | +15° | 381 ft |
| Right field | +30° | 354 ft |
| Right-field line | +45° | 326 ft |
T-Mobile Park FAQ
How does T-Mobile Park compare on projected home-run distance?
99% of the recent tracked sample is estimated to clear T-Mobile Park's fence, versus 97% averaged across 30 parks. This compares projected distance at the same spray angle; wall height, trajectory and weather are not modelled. It is not an official park factor or a measure of home-run probability.
What are the outfield wall distances at T-Mobile Park?
The wall at T-Mobile Park is 326 ft at its shortest, 401 ft to straightaway centre, and 401 ft at its deepest point.
What makes T-Mobile Park unique?
Heavy marine air and a retractable roof that acts as an umbrella rather than a dome. Opened in 1999.
Home runs hit at T-Mobile Park
| Date | Batter | Distance | Parks it clears |
|---|---|---|---|
| September 27, 2026 | Jose Siri | 360 ft | 27/30 |
| September 26, 2026 | J.P. Crawford | 403 ft | 30/30 |