On the 35th anniversary of the first no-hitter in franchise history, the Mariners have announced that they will be retiring the number of the man who did it. Randy Johnson, the greatest left-handed pitcher in baseball history, will be honored in a ceremony during the 2026 season, with the exact date to be announced once the 2026 schedule is finalized. It will be the second time the Mariners retire number 51, after they honor Ichiro Suzuki this August 9th.
The Big Unit wore number 51 on his back through innumberable iconic moments in franchise history. He wore it when he threw the no-hitter on June 2, 1990.