Sport Trivia
In American Football, certain rule changes have been implemented in an attempt to reduce the number of more serious injuries. An example of this is the illegal "crackback block", when a blocker positioned wide blocks back towards where the ball was snapped. These blocks are infamous for causing severe leg injuries. Another rule recently implemented is that a defender can't dive a quarterback's legs while bringing him down. Thie rule has been colloquially referred to as the "Carson Palmer" rule, after he was injured from such a contact in the 2005 NFL season.
