It just dawned on me yesterday that I rarely see tournaments played in freezing cold conditions. Obviously tennis isn't a game that can be played with precipitation, so I'm not talking about playing when it's snowing or sleeting, but are there any big-money ATP tournies played in sub-zero temperatures? Most outdoor tournies nowadays are played under the hot sun, with players drenched in sweat and constantly having to hydrate to avoid heat stroke. That's all fine and dandy, but I'd LOVE to see a hard-court matchup between Nadal and Federer, with both of them bundled up during change-overs, breathing icicles out of their mouths, and dealing with balls that drop faster in the denser air. If 'endurance' to deal with the extreme heat during the Australian and US Opens for instance is a talent pros train themselves for, why not the same for the extreme cold too? If thousands of fans can turn up in the cold to watch soccer, American football, and even baseball, I'd imagine they'd be willing to turn up to watch tennis in the cold too. Thoughts?