Ok so i was going to put this into rants and raves but i actually do need advice. To be straightforward, my doubles partner has no emotional discipline. hes a great friend of mine, he has good volleys, a consistent-but-sometimes-weak-but-consistent serve, has a good forehand, etc. but all that breaks down when we start losing. if we go down one game, he'll be okay. but if it goes to two games or more, and we lose our momentum a little, he goes berserk. just today we were playing two seniors(were sophomores) and by the third game he was cussing and muttering probably some bona fide curses. but the worst part is when the other team needs some tennis balls to serve, and he whacks it to them or gives it to them like theyre dirt. it embarasses me to even be on the same court with him when hes like that. i got sick of repeating to him "Dont worry about it, its ok". But what else should i do? hes kind of a narcissist, maybe a little too self confident, and when i think if i looked him in the eye and tell him to calm down, id probably have better chances on ku beating UCLA. if im too assertive in telling him to calm down, i think hed probably do even worse. or hed might just ignore me like he didnt even hear me, making him a GREEAAT doubles partner. but if he just stays in that state, id probably save time and energy just whamming balls straight into the ground to lose the point. playing with him when hes being a ****** makes me wish id joined track to be the javelin catcher. its no fun and i hate it. then, at the very worst, he'll start blaming ME, even when he sets me up. but i cant explode at him, can i? then wed embarass ourselves, our teamates, our school, etc. and the other doubles team would have a great time too. so its crucial i keep my temper and composure. so what should i do in this case? what could i say? what have you done in this situation? i think the only benefit to this is when i play him in singles.