i agree that the call is a judgement call left to the referee. i don't think DCA meant he intentionally bullies smaller opponents. some people just play more aggressive than others. i think that you shouldn't have to change your level of play at the drop of a hat. on the other hand, certain schools do have girls on their boys team. it really just depends on the player. if a little shoulder is needed to take the ball, its not wrong to use it, within moderation. the ability to judge that situation destinguishes a player between a dirty player or an aggressive one.