MLB - MLB clubs will wear jersey patches throughout 2019 in celebration of the 150th anniversary of the first openly all-salaried professional baseball team (1869 Cincinnati Reds). In addition, teams will wear
Teams will wear 'MLB 150' patch on uniforms this year - NBC Sports
150th Anniversary Throwback Uniforms
Cheers to 150 years: Reds to wear 15 different throwback uniforms in 2019
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Cheers to 150 years: Reds to wear 15 different throwback uniforms in 2019
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What does the MLB 150 Patch stand for?
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