Did I do the right thing? Or should I have tried to have been the better person?

Well...I had a tennis tournament yesterday and today. For first place, I had to play against this one girl. She had a really bad attitude. When 'handing' the ball over to me when it was my serve, she would hit it really hard so I wouldn't even be able to catch it. She wouldn't even say the score before she served, so I had to ask her about ten times. One time I was waiting for her to get the so she could serve, and really rudely, she said, 'Do you think you can get that for me'?. And this ball was on her side, about ten feet away from her (so I had to walk to the other side because she couldn't handle getting it herself). She even thought it was her serve once, and I said, 'Ummmm...I think it's my serve'. And really rudely, she was like, 'No, actually it's my serve'. She didn't believe me until her dad told me it was my serve. Her over all attitude to me in general sucked. Then our parents started fighting...After the match, she won (SUCKS so bad, I know). I was leaving when she