The Seattle Mariners are set to officially retire Randy Johnson’s number 51 during a pre-game ceremony at T-Mobile Park on May 2nd, 2026.
The Big Unit’s number will be the fifth number retired in Mariners history, joining fellow Hall of Famers Ken Griffey Jr. (#24), Edgar Martinez (#11) and Ichiro Suzuki (#51). As with all MLB teams, the Mariners have also retired Hall of Famer Jackie Robinson’s #42.
Johnson had a 22-year Major League career, playing for six teams, including the Mariners from 1989 to 1998.
The hard-throwing lefthander retired following the 2009 season with a career win-loss record of 303-166, ERA of 3.29 and 4,875 strikeouts, second only to Nolan Ryan’s 5,714.
