I watched a Law & Order - CI rerun today that was filmed in 2004. It was about a HS basketball player. It showed a team practice and at least seven of the players were wearing "illegal" numbers. Also, in one scene some of the detectives were watching a video of a game and even though you couldn't see the video very well, one of the detectives referred to a player on the other team as "number 27", so I guess all the HS teams in New York City wear "illegal" numbers.
You'd think that with all the money they spend on making these shows they'd at least hire a consultant to get the numbers right before they had the jerseys made.
Heck - I'd do it for just a date with Mariska Hargatay from L&O-SVU.
