In sport, a number can carry a lot of weight. In rugby or American football, a number denotes a position on the field, and a player will wear the same number year-round. In Formula 1, a driver's number is a big part of their brand. In plenty of sports, a number can be so important that when a legendary player retires, their club or team will retire their number with them, out of respect.
In cycling, however, it's a bit different. There are no season-long numbers (much to commentators' chagrin), no brand like Lewis Hamilton 44, and really it's just a random number that changes every race.
