Most of these Pro Athletes have been given the "star" treatment since High school and college, and think they are something special, and don't have to follow the "rules". They probably look at the singing of the National Anthem as a nuisance and a hold up to them getting the game going. Plus a percentage of them probably don't respect the country anyway.
Tom
Live today, tomorrow may not come!
Boberg XR9S
Kahr CW40
Springfield Armory 1911
Dan Wesson Revolver
HY*NDAI is to cars, what Caracal, Hi-Point, and Jennings is to handguns. The cars may or may not run ok, but the corporation SUCKS.