Baseball uniform
By 1932, all major league baseball teams had numbers on their player's baseball uniforms. The numbers were on the backs of the shirts, with the team name or logo on the front. But in 1952, the Brooklyn Dodgers were the first team to put numbers on the fronts of baseball uniforms. As players began to have their own numbers on their uniforms, "retiring" a number of special baseball players started to happen. While testing new ideas to add to baseball uniforms, new designs and ideas were created. For example, the Houston Astros of the 1970s and 1980s, added numbers on the fronts of pockets on pants as well as on the back of their shirts.