Why T-Mobile Park Matters
The quick read
T-Mobile Park opened in 1999 as Safeco Field, built to keep the Mariners in Seattle after a near-move to Florida, and it carried the nickname “the house that Griffey built.” The roof made baseball work in a rainy city. The name changed to T-Mobile Park in 2019, but the history that draws fans here is older than the building: Ken Griffey Jr., Edgar Martinez’s 1995 “Double,” the 116-win 2001 team, Felix Hernandez’s perfect game, and the 2022 club that finally ended a 21-year wait.
A point of order that matters for the early stories: some of the most famous Mariners moments happened at the Kingdome, the team’s home from 1977 until the middle of 1999, not in this ballpark. We will keep that straight below.
Sources for the facts here are kept in the page’s notes rather than the text. If you spot something off, the contact link is the fastest fix.
What it replaced
The Mariners spent their first 22-plus seasons in the Kingdome, the concrete domed stadium next door. By the mid-1990s it was failing, and there was real fear the team would leave Seattle. A 1995 King County vote on stadium funding narrowly failed, but the state legislature passed an alternative funding package days later, and the new ballpark went up just south of the Kingdome. Ground broke in 1997, with Ken Griffey Jr. at the ceremony.
The park opened on July 15, 1999, right after the All-Star break. The Mariners lost the first game 3-2 to the San Diego Padres in front of 44,607, with broadcaster Dave Niehaus throwing the ceremonial first pitch. The Kingdome was demolished in 2000.
The house that Griffey built
Ken Griffey Jr. was the player the whole stadium fight revolved around, and when the new park opened the franchise leaned into the connection. After Griffey returned to Seattle as a visiting player in 2007, the team unveiled a poster calling the park “the house that Griffey built,” and the phrase stuck.
The park opened as one of the most pitcher-friendly in baseball, so the Mariners moved the fences in before the 2013 season to even things out for hitters, and replaced the scoreboard with what was then the largest in the majors.
Edgar’s Double (1995)
The single most important moment in Mariners history happened at the Kingdome, not here, but it is why this park exists. In Game 5 of the 1995 American League Division Series against the Yankees, with the Mariners down a run in the 11th, Edgar Martinez lined a two-run double down the left-field line to win it, scoring Joey Cora and Ken Griffey Jr. Mariners fans simply call it “The Double.” That run, and the postseason energy around it, is widely credited with saving baseball in Seattle and getting the new ballpark built.
The 116-win team
The 2001 Mariners won 116 games, tied with the 1906 Cubs for the most in a single season in major-league history. The team was led by Ichiro Suzuki, who arrived from Japan and won both the AL MVP and Rookie of the Year that year. The run ended in the ALCS against the Yankees, and the franchise has still never reached the World Series, but the 2001 club remains one of the best regular-season teams the sport has ever seen.
Felix and the perfect game
Felix Hernandez, “King Felix,” gave the park its signature individual performance: on August 15, 2012, he threw a perfect game against the Tampa Bay Rays, winning 1-0 with 12 strikeouts. It was the first perfect game in franchise history and the 23rd in major-league history. His starts drew the King’s Court, a section of fans in yellow shirts waving yellow K cards with every strikeout, and the tradition became part of the park’s identity.
The drought and 2022
For 21 straight seasons, from 2001 to 2022, the Mariners did not reach the postseason, the longest active drought in the major North American pro sports by the time it ended. It broke in 2022, when Cal Raleigh’s walk-off home run clinched a spot. The Mariners then beat Toronto in the Wild Card round before losing the Division Series to the Astros.
Statues and retired numbers
Four statues stand outside the park: broadcaster Dave Niehaus, Ken Griffey Jr. (2017), Edgar Martinez (2021), and Ichiro (2026), all by the same sculptor. The retired numbers are 24 (Griffey), 11 (Edgar), and 51, which the team retired for both Ichiro (2025) and Randy Johnson (2026), hanging the two jerseys side by side. The 51 has a story behind it: Ichiro asked Johnson for the number when he arrived in 2001, Johnson gave his blessing, and Johnson later delayed his own ceremony so Ichiro could have his own day. Randy Johnson also threw the franchise’s first no-hitter. The number 42 is retired across baseball for Jackie Robinson.
A fifth statue joins them in 2026: a tribute to the 116-win 2001 team, depicting Mike Cameron and Mark McLemore raising the American flag, set for the Center Field Plaza.
The park has also hosted the wider sports world: the 2001 MLB All-Star Game (July 10, 2001, a 4-1 American League win and Cal Ripken Jr.’s final All-Star Game, which he capped with a home run and the MVP award), the 2023 All-Star Game, WrestleMania XIX in 2003 (the venue’s record crowd of 54,097), and the 2024 NHL Winter Classic.