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T-Mobile Park

T-Mobile Park is a retractable-roof baseball stadium in Seattle, Washington, United States.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

T-Mobile Park is a retractable-roof baseball stadium in Seattle, Washington, United States. It has been the home of the Seattle Mariners of Major League Baseball since 1999 and is located in the city's SoDo neighbourhood. The ballpark opened on July 15, 1999 and was renamed from Safeco Field to T-Mobile Park in 2019.

History

T-Mobile Park opened in 1999 as Safeco Field and replaced the Kingdome as the Mariners' home. The first game at the park was played on July 15, 1999.

Design and features

The ballpark is a retractable-roof facility designed for baseball and has a listed seating capacity of 47,368. It is located in Seattle's SoDo district near the western terminus of Interstate 90.

Tenants and use

The Seattle Mariners have used T-Mobile Park as their home stadium since it opened. The venue is primarily a Major League Baseball ballpark.

Naming rights

The park's name changed from Safeco Field to T-Mobile Park after T-Mobile acquired naming rights in a long-term agreement. The change took effect in 2019.

Key facts

  • T-Mobile Park is the Seattle Mariners' home ballpark and opened in mid-1999.
  • The stadium has a retractable roof and is located in Seattle's SoDo neighbourhood.
  • It was originally known as Safeco Field before adopting its current name in 2019.
  • The stadium's listed seating capacity is 47,368 for baseball games.
  • The park is owned and operated by the Washington State Major League Baseball Stadium Public Facilities District.

Frequently asked questions

What is T-Mobile Park?
It is a retractable-roof baseball stadium in Seattle, Washington, and the home of the Seattle Mariners.
When did T-Mobile Park open?
It opened on July 15, 1999.
What was T-Mobile Park called before?
It was previously called Safeco Field.
What is the stadium's seating capacity?
Its listed seating capacity is 47,368.
Who owns and operates T-Mobile Park?
It is owned and operated by the Washington State Major League Baseball Stadium Public Facilities District.
Where is T-Mobile Park located?
It is in Seattle's SoDo neighbourhood at 1250 First Avenue South.

References

  1. Wikipedia — https://en.wikipedia.org/wiki/T-Mobile_Park
    Supports: Basic facts on location, type, opening date, home team, capacity, and ownership.
  2. Seattle Mariners / MLB — https://www.mlb.com/mariners/ballpark/ground-rules
    Supports: Renaming to T-Mobile Park in January 2019 and naming-rights information.
  3. Seattle Mariners / MLB — https://www.mlb.com/mariners/history/ballparks
    Supports: History of the Mariners moving from the Kingdome and current ballpark capacity.