I must say I had a bit of a laugh at this thread. I've just spent three days at the Nottingham Open and the dress code was waterproof coats, jumpers, backpacks etc. It was freezing a lot of the time, with some brief bursts of warmth. And of course rain!
But the tennis was brilliant. Really enjoyable. That's what we went for: to see good tennis.
I don't understand how sporting events become all about what to wear. It's the same with horse racing. That should be about the horses and the sport, not a fashion parade!