[deport]

The NFL needs to do as the NBA and put the requirement in the Rules and require
that be a part of each players contract. Here what is included in the NBA rules/regs

...
(1) Each player when introduced, prior to the game, must be uniformly dressed.
(2) Players, coaches and trainers are to stand and line up in a dignified posture
along the sidelines or on the foul line during the playing of the National Anthem.
(3) Coaches and assistant coaches must wear a sport coat or suit coat.
(4) While playing, players must keep their uniform shirts tucked into their pants,
and no T-shirts are allowed.
(5) The only article bearing a commercial 'logo' which can be worn by players is their shoes.
end snip

[dirtboy]

or on the foul line

I think that's MLB.