Jerry plays wide receiver for the San Francisco Forty Niners. During a game, Jerry catches a pass and heads for the end zone full steam. Only Deion stands in his way. Jerry squares his shoulders and hits Deion square between the numbers (his front chest/torso).

Deion is thrown back 5 yards and is severelyinjured. Later, Deion sues Jerry for battery. What defense(s), if any, can Jerry raise in this case? Explain the defense(s)?