Tony Romo's jersey number is #9
In the major leagues, yes, its so you can tell them apart.
There is no requirement in the FIFA Law of the Game for the jerseys to have numbers on them. However, most leagues do implement requirements that players be uniquely identifiable by their jersey. Numbers are usually mandated for this purpose because of potential language difficulties.
He can wear 10-19 or 80-89.
yes the numbers reflected where the player typically hit in the lineup.
He wore the number 81
white jersey with red numbers
Carlos Valderrama used to wear the No. 10 shirt.
On Jackie Robinson day, players in the Major Leagues all wear the #42 on their jersey to honor a true hero and baseball legend.
a referee jersey
A cornerback wears 20-49 A defensive lineman can wear 50-79 and 90-99 A linebacker can wear 50-59 and 90-99