Yes, Rafa said there's edema (swelling) on his back.
During the Australian Open final, the only question true fans of the sport and champ Rafael Nadal had was: How serious is his back injury? While most would have retired, he finished the match and r…
I don't know much about this kind of thing, but I'm thinking this means it wasn't back spasms, which is what they had thought it was?.
He said he had felt something, though minor, at Canada last year. They need to look into it and be careful

I cannot imagine -30 degrees. The most we ever get around here (Chile) is, I don't know, -5 I guess. Most people do not have heat in their houses though, so it can feel really cold.