American football players have worn the jersey number 45?
Off the top of my head: Steven Jackson.
a football jersey is a football players shirt
Jack "Hacksaw" Reynolds - Rams
all football players
no
Mike Singletary-Chicago Bears
When they give you a jersey, and a helment, or basically the gear. When they are on the roster.
football
None.
American football was founded in New Jersey
Shaq
Washington Redskins' Clinton Portis