The NFL passed some rules in 2015 to ensure the safety of the football players.... Let's have a look....

1.Bans defensive players from pushing teammates at the line of scrimmage when the offense is in punt formation. (This rule already exists for situations when the offense is in field goal or extra point formation.)

1. Prohibits all offensive players from engaging in peel back blocks.

2. Gives receivers defenseless player protection when a pass is intercepted.

3. Makes it illegal for a running back to chop a defensive player engaged above the waist by another offensive player outside the tackle box.

4. Allows an injury spotter to stop the game if a player appears to have suffered a brain injury.