Losing at board games?

My 8 year old is really bad at losing at board games. He has a hissy fit and pounds his fists into his mattress of the sofa and cries and screams in revolt. It is not just with his family, but he gets really mad when his friends win at anything either (video games, football). Besides modeling behavior (my husband thinks we should let him win at games, I disagree) how can we teach him better coping mechanisms?