Nadal stays on course
Rafa Nadal has admitted finishing the year as world number one it will rank as a "very important achievement" in his career.
The Spaniard is currently ranked at the top of the pile in men's tennis, ahead of Roger Federer in second and Andy Murray in third, and he will hope to stay at No.1 for the rest of the year.
Nadal made it 13 wins on the trot when he beat American Jared Donaldson in the second round of the Shanghai Masters on Wednesday and he admits he wants to maintain his fine form and finish a calendar year as the world's best for the fourth time in his career - and for the first time since 2013.
"If the year-end ranking happens, it will be, I think, a very important achievement for me," he said.
"With so many years of difference I think it’s something very difficult. But there remains work to do."
Federer, meanwhile, also had little trouble advancing in Shanghai as he overcame Argentinian Diego Schwartzman 7-6 6-4 in his second-round tie.
Aidan Perkins is a senior journalist that specialises in football stories. Aidan, a Liverpool fan, also has a broad knowledge of several other sports.