I am afraid Djokovic can be next one to pay the price because his style of play is the same as Nadal.Sliding,spliting on those hard courts soon or late your body will play the price. Why do not they
speed up the courts so their matches would not last five or six hours. It is just not fair to players,fans.
Nole never had any leg or knee problems; and Ferrer is four years older than Nadal, runs a lot and plays many grueling rallies, yet just had the best season of his career.