HISTORY OF SHIRT NUMBER IN FOOT BALL
Player jersey numbers were first used on 25 August 1928, when Arsenal and Chelsea played against The Wednesday (later to become Sheffield Wednesday) and Swansea Town on the same day.
After several experiments – of course there are cons who think that the jersey number can damage the color of the costume – England decided to apply the jersey number as a permanent form of footballer's costume. Initially, the eleven starting players wore jersey numbers that were traced from the numbers 1 to 11, and a player could use a different jersey number in one season.
Although there is no set rule that determines which jersey number represents a particular position on the pitch, a de facto standard has emerged and is used by most football teams, with a few exceptions.
In general, goalkeepers wear the jersey number 1. This unwritten agreement is almost universally accepted. Defenders or defenders use numbers 2 and 6. Midfielders usually use numbers 4, 6, 7, 8, 10, and 11 (numbers 11 and 7 are typically used by left and right wingers). Meanwhile, strikers like to use numbers 9 and 10, and sometimes, even though they are less popular, numbers 7, 8 and 11.
When the substitution system was introduced to football in 1965, the reserves took the number 12; when the second substitute was allowed, they wore number 14. Yep, the players at that time were still afraid to wear number 13 because they still superstitiously believed that the number could bring bad luck.
The use of a jersey number that was assigned exactly to each player in a squad was introduced at the 1954 World Cup. Every player from each country that entered the 22 player list wore a certain jersey number and was the same throughout the tournament. As a result, jersey numbers 12 to 22 can be assigned to other players in the squad, regardless of the player's position on the field.