Mariners to Wear Seattle Steelheads Uniforms May 16 vs. Boston, by Mariners PR

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Join New Day at T-Mobile Park for a special Mariners-themed show!

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68 Game-Used Seattle Steelheads Uniform - Pants, Cap, Team-Issued Jersey

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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

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

Julio Rodriguez Game Used Seattle Steelheads Uniform - 6/17/23

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

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

Juneteenth celebrations: Seattle Mariners honor Negro Leagues

Mariners Fashion Statement, by Mariners PR

Mariners New City Connect Uniform Taps Into City's Long Baseball History – SportsLogos.Net News