Hard to believe there can't be consensus on this:
Numbers
USA: Uniform numbers; Players may not wear the same number, whether in the game or not. Numbers 0 and 00 are not considered to be the same number. 3.6D
NCAA: Players on the same team shall not wear the same number. 0 and 00 are considered the same number. 3.10.4
NFHS: No players on the same team may wear identical numbers, (0 and 00) are considered the same number. 3.2.2
I know a common sense argument wouldn't consider 1 and 11 to be the same number, but an extension of the logic might.
And while I'm at it, why can't the car manufacturers agree to have the gas filler pipe consistently on the same side for all vehicles??
