Ethos

T-Mobile Park

Stadium · Seattle, Washington

The home ballpark of the Seattle Mariners, at 1250 First Avenue South in Seattle's SoDo neighborhood. It opened on July 15, 1999 as Safeco Field, under a naming-rights deal signed in June 1998 with the Seattle-based Safeco Insurance worth $40 million over 20 years, and was renamed T-Mobile Park effective January 1, 2019, after T-Mobile acquired the rights on December 19, 2018 for $87.5 million over 25 years. Listed capacity is 47,574. No official URL is published: MLB.com returned HTTP 406 to every fetch attempted in either research pass, including the ballpark page, and the club's own subdomain additionally failed TLS certificate validation.

History

The ballpark replaced the Kingdome, whose rapid deterioration included the collapse of ceiling tiles onto the seating area before a scheduled Mariners game in 1994 — a detail the Kingdome's own article carries, and which is cited to that article here because the ballpark's article does not contain it. The Washington State Legislature authorized replacement funding in October 1995, ground was broken on March 8, 1997 with Ken Griffey Jr. taking part, and total construction cost was $517 million. An independent ballpark directory names NBBJ as architect and gives the capacity of 47,574 and a retractable roof spanning about nine acres and weighing 22 million pounds; the ballpark's own encyclopedia article adds 360 Architecture as a second architect, Magnusson Klemencic Associates as structural engineer and the Hunt-Kiewit partnership as general contractor. T-Mobile Park hosted the 2023 Major League Baseball All-Star Game and the 2024 NHL Winter Classic. The Mariners were established in 1977 as an expansion team, created after a lawsuit that followed the Seattle Pilots' 1970 relocation to become the Milwaukee Brewers, and the team name was chosen from a public contest with more than 600 names submitted. The club is the only active Major League Baseball franchise never to have appeared in a World Series. In 2001 it compiled a 116-46 regular-season record, tying the all-time single-season wins record set by the 1906 Chicago Cubs and setting the American League record. It reached the playoffs in 1995, 1997, 2000, 2001, 2022 and 2025, and won its first American League West division title in 24 years in 2025.

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1250 First Avenue South, Seattle, Washington 98134

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