Mariners to Wear Seattle Steelheads Uniforms May 16 vs. Boston

Baseball: Mariners Cap Off Successful Homestand, Take Series from White Sox – Eli Sports Network

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

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Seattle Steelheads Jersey Julio Rodriguez Negro Leagues Seattle Mariners

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

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