Mariners to Wear Seattle Steelheads Uniforms May 16 vs. Boston

New Sunday Uniforms for the Mariners. Blue and yellow brought back on a slightly off-white base. No names on back. : r/baseball

Seattle Mariners unveil new spring training uniforms

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Seattle Mariners unveil new spring training uniforms

Seattle Mariners' Dustin Ackley connects with a pitch for a double against the Boston Red Sox in a baseball game on Saturday, May 16, 2015, in Seattle. Both teams are wearing uniforms