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

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Pro baseball began in Cincinnati in 1869

Reds 150th Anniversary Baseballs First Professional Team

On this day in history, March 15, 1869, Cincinnati Red Stockings become first professional baseball team

Pro baseball began in Cincinnati in 1869

Reds to celebrate 150th anniversary with new logo, 'old' uniforms

Valley News - 150 years, almost as many uniforms: Reds plan tribute to original 1869 Red Stockings

150th Anniversary Throwback Uniforms

On this day in history, March 15, 1869, Cincinnati Red Stockings become first professional baseball team

On this day in history, March 15, 1869, Cincinnati Red Stockings become first professional baseball team

Cheers to 150 years: Reds to wear 15 different throwback uniforms in 2019