Which competition (or team, if relevant) was the first to print each player's name on the uniform? Was there a specific reason given to do so?
Both questions are independent of specific sports. The first one I'm asking out of historical interest. The second is because I see little point in printing players' names when they already have identifying numbers (other than selling replica uniforms, which is, as far as I know, a practice that postdates the introduction of named uniforms).