The Seattle Mariners made it official Thursday, and the weight of history followed immediately.
On May 2, 2026, before a single pitch is thrown, Randy Johnsonâs No. 51 will rise permanently into the rafters, becoming the fifth number retired by the franchise and sealing one of the most important chapters in Mariners history.
For a fan base shaped by dominant arms, near-misses, and moments that defined the cityâs baseball identity, this announcement lands like a thunderclap.
âIâm happy that my contributions over the 10 years that I was there are being acknowledged now,â Johnson said via Zoom in June. âItâs been a long time, thatâs for sure.â
It has. And that wait â long, debated, sometimes questioned â is exactly what makes this moment resonate.
Johnsonâs No. 51 will join Ken Griffey Jr. (No. 24), Edgar MartĂnez (No. 11), and Ichiro Suzuki (No. 51) in the most exclusive club the Mariners can offer. Like every MLB team, Seattle has also retired Jackie Robinsonâs No. 42, but this honor is different. This one is deeply local. Emotional. Earned over time.
Across 10 seasons in Seattle, Johnson went 130â74 with a 3.42 ERA, carving out a legacy that statistics alone fail to capture. He wasnât just dominant â he was transformational. He changed how the franchise was perceived. He made the Mariners matter on a national stage.
And he did it while learning, struggling, evolving.
Johnson arrived in Seattle in 1989 after debuting with the Montreal Expos a year earlier. Early on, his electric arm came with control issues. The velocity was undeniable. The command was not.
Then came 1993 â the season everything clicked.

Johnson went 19â8 with a 3.24 ERA, launching the first of six 300-strikeout seasons and signaling the arrival of something baseball hadnât quite seen before. A 6-foot-10 left-hander with wipeout stuff, relentless intensity, and a presence that overwhelmed hitters before the ball even left his hand.
The nickname stuck for a reason.
The Big Unit had arrived.
If there is a single year that defines Randy Johnsonâs bond with Seattle, it is 1995.
That season, Johnson went 18â2 with a 2.48 ERA, capturing the first of his five Cy Young Awards. But the numbers tell only part of the story. Off the field, the franchise itself was on the brink.
In September, King County voters rejected taxes to fund a new stadium. The Marinersâ future in Seattle was suddenly in doubt. At the same time, the team surged on the field, electrifying the Kingdome and pushing all the way to the AL Championship Series before falling to Cleveland.
It was chaos. It was pressure. And somehow, it worked.
âLooking back at it now and that story being documented by the Mariners, it worked out,â Johnson said. âIâm just thankful that I was a big part of that and everybody else was a big part of it, and everything just kind of gelled for all the players.â
The city stayed. The team survived. And Johnsonâs fingerprints were everywhere.
Johnson was traded to the Houston Astros during the 1998 season, closing his Seattle chapter earlier than many fans wanted. What followed only elevated his place in baseball history.
With the Arizona Diamondbacks, he reached mythic status â winning four consecutive Cy Young Awards and a World Series in 2001. He later pitched for the New York Yankees and San Francisco Giants, finishing a 22-year career that reads like a Hall of Fame blueprint.
Final numbers: 303â166 record, 3.29 ERA, 4,875 strikeouts â second only to Nolan Ryan. One of just four pitchers in MLB history with 300 wins and 4,000 strikeouts, alongside Ryan, Roger Clemens, and Steve Carlton.
The Diamondbacks retired his No. 51 in 2015. The Baseball Hall of Fame followed the same year.
Seattle waited.
Johnson is already second in Mariners history in wins and strikeouts, third in innings pitched, and a Mariners Hall of Fame inductee since 2012. Yet the jersey retirement carried a different weight â a final acknowledgment of what he meant during the years when the franchiseâs future was anything but secure.
âTháșt cáșŁm Äá»ng,â Johnson said recently. âKhi tĂŽi trá» thĂ nh huyá»n thoáșĄi cá»§a Seattle Mariners vĂ Äáș·c biá»t lĂ sá» ĂĄo cá»§a mĂŹnh ÄÆ°á»Łc vinh danh.â
On May 2, 2026, the debate will finally end. No. 51 will hang forever, untouched, carrying with it the memory of intimidation, resilience, and a left arm that helped keep baseball alive in Seattle.
For the Mariners, this isnât just about honoring a pitcher.
Itâs about honoring a moment in time â when the Big Unit stood tall, and the city followed.
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