The Seattle Mariners retired Hall of Fame pitcher Randy Johnson's jersey number 51 [1] during a pre-game ceremony on May 2, 2026 [2].
The retirement honors one of the most dominant pitchers in baseball history, cementing the legacy of the man known as "The Big Unit" within the franchise's history.
The ceremony took place at T-Mobile Park in Seattle, Washington, before the Mariners played a home game against the Kansas City Royals [3]. The event recognized Johnson's contributions over more than nine seasons with the club [4]. During his tenure in Seattle, Johnson achieved several milestones, including throwing the first no-hitter in the history of the Mariners franchise [4].
Johnson's impact on the organization extended beyond his statistical achievements. His presence on the mound transformed the team's competitive standing and provided a blueprint for future pitching dominance in the American League. The decision to retire number 51 [1] ensures that no other player in the organization will wear the digit, reserving it exclusively for the left-hander's career achievements.
The 2026 season [5] marks a significant period of reflection for the team as it honors its historical icons. By elevating the number to the rafters of T-Mobile Park, the Mariners join a small group of teams that formally recognize the impact of a single player through jersey retirement. The event served as a bridge between the franchise's early years and its current era of competition.
“The Seattle Mariners retired Hall of Fame pitcher Randy Johnson's jersey number 51”
The retirement of Randy Johnson's number 51 signifies the Mariners' effort to institutionalize their franchise history. By honoring a player who delivered the team's first no-hitter, the organization reinforces a standard of excellence for current and future athletes while strengthening the emotional connection between the team and its long-term fanbase.
