Why? Just cos someone is from the same country as you then you have to want them to win do you? So what about bands then - should I be a fan of The Wanted or One Direction just cos they're British?
I don't like Murray but I'm pleased for him that he's won. I ****ing hate Lewis Hamilton and never want him to win.
It's the competitive nature that is the difference.
I'm not saying that you can't be a fan of other players but if you are not a massive fan of a particular opponent I would expect practically all British people would want him to win.
I think it would be similar with the Eurovision song contest. Most people wouldn't be a fan of anybody but they would still want the UK entrant to win.
