Novak Djokovic  at the AccorHotels Arena ahead of the  Paris Masters. Photograph:  Justin Setterfield/Getty Images

Ranked number 22 in June, Novak Djokovic has an excellent chance to be back at number one by November. No man has made it to the top from so far back (...)

Roger Federer shakes hands with Novak Djokovic after defeating him in two sets to win the mens singles final at the Western & Southern Open at the Linder Family Tennis Center in Cincinnati, Ohio. Photo: Rob Carr/Getty Images

Novak Djokovic slid from outright favourite for the US Open to worryingly vulnerable contender in an hour and a half here on Sunday as Roger Federer c(...)