The World Surf League (WSL) surfers will feature their favorite numbers on their backs. Original idea? Not even close.
Kelly Slater picked number 11 (for the world titles he has won); Gabriel Medina chose 10 (probably the most iconic number in football history), and John John Florence opted for number 12 (ready to beat Slater). The criteria can be date of birth, favorite digit, lucky number, or any other numeric superstition.
The first time numbers were used in football (soccer) was in the 1920s, in England. Back then, numbers were assigned by field location: for example, goalkeeper, full back, center forward, etc.