well i dont see any information but i can tell you a good partner must have good sportsmanship without good sportmanship they woul;dnt be fun to hang with. a good sportsmanship is congradulating the person for their win and sharing the tenis ball, making sure u are helpful to the person and dont pick on them just cuz they made a mistake. and if the person needs help with something help them.
i hope this helps u with the question and maybe try fixing the question so more ppl can help :)