the Packers and the Bears are the longest rivalery
Chicago Bears. Second is Pittsburgh
Easy: that was George Blanda who played quarterback and kicker in college and in professional football. He has the record of the most seasons played at 26. George, at the time of his retirement, had scored more points than any other football player.
yes, he played semi professional football as a teenager
Adam Sandler
Besides professional football, Deion Sanders also played professional baseball.
Bill Goldberg
Professional football, American style.
football and other sports
The football team that Bill Bosworth played on was the Louisville Cardinals. Brian Bosworth played professional football for the Seattle Seahawks.
no one ever made that switch in that order
2005-present.