June 17, 2023 Seattle Mariners - Seattle Steelheads Replica Jersey

The Mariners are these wearing throwback uniforms vs the Rays today to honor the Seattle Steelheads, a former Negro League team : r/baseball

Seattle Mariners on X: These jerseys 😍 #GoSteelheads / X

History:  The West Coast Baseball Association was an attempt at a western Negro League competitor, but it only lasted one season. The Seattle entry in the league was actually Abe Saperstein's Harlem Globetrotter baseball team under a new name, that of a local variety of salmon.

Ebbets Field Flannels Seattle Steelheads 1946 Home Jersey

Pre-Spring Training meeting: Excitement remains present as Mariners prepare to build off historic 2022 season — Converge Media

Press release: Mariners Homestand Highlights: June 12-18 vs. Miami Marlins and Chicago White Sox

Mariners Game #66 Preview, 6/13/23: Miami at Seattle - Lookout Landing

Mariners 2022 season: Opening Day, upcoming special events & giveaways

Mariners Team Store (@marinersteamstore) • Instagram photos and videos

The Uni Watch 2023 MLB Season Preview - by Paul Lukas