Joe and Sam agree to fight each other in a boxing match. After a long back and forth match, Joe defeats Sam on the judge's scorecard. As Joe is raising his arms in victory, Sam punches Joe in the side of the head, knocking him to the ground. Sam never saw the punch coming. Which is true

-Joe does not have a cause of action for assault or battery because he consented to participation in the boxing match.

-Joe has a cause of action for assault because the punch occurred at the end of the boxing match.

-Sam may assert self-defense if Joe brings a claim for battery.

-Sam will not be able to assert consent as a defense, because at the time he hit Joe, the match had ended.