What does number 3 mean on Barcelona Messi soccer shirt soccer team shirts?

Answer 1

the embroidered number on Ralph Lauren Big Pony pieces traces its heritage to the traditional uniform of professional polo players. The players are assigned a position, which is designated by the numbers from one to four and displayed on team jerseys during a match. The player in position number three is usually the most experienced player on the team.

Answer 2

The whole Team wear the yellow No. 3 on their left sleeve. It's Catalan 3 TV, a sponsor of Barcelona FC

Answer 3

It's a sponsor cantalan tv 3 I think something like that