Kei Nishikori of Japan returns a shot against Novak Djokovic of Serbia during their men’s singles semi-final  at the 2014 US Open at the USTA Billie Jean King National Tennis Center,  New York City. Photograph: Mike Stobe/Getty Images

There is no obvious tennis reason for Michael Chang to be advising Kei Nishikori, apart from their sharing winged feet, but helping him to the US Open(...)

Stan Wawrinka of Switzerland in action during his victory over Denis Istomin of Uzbekistan in straight sets at Wimbledon. Phogo: Valdrin Xhemaj/EPA

One of the misunderstandings about sport is that opponents always compete under equal conditions. That understanding is housed in one of the great cli(...)

 Andy Murray of Great Britain serves during his men’s singles match against Andrey Golubev of Kazakhstan on day three of the French Open at Roland Garrosin Paris, France. Photograph: Getty Images

Through wind, gloom and a little uncertainty Andy Murray moved on in his return to the French Open, from Andrey Golubev, a bookish Russian-born free-(...)

 Andy Murray serves during his men’s singles match against Andrey Golubev of Kazakhstan at the  French Open  in Paris. Photograph: Matthias Hangst/Getty Images

Andy Murray won a scrappy contest against Andrey Golubev in four sets to mark his return to the French Open.The Wimbledon champion began well but got (...)

Roger Federer of Switzerland throws his sweatband into the crowd as he celebrates victory in his men’s singles match against Lukas Lacko of Slovakia on day one of the French Open at Roland Garros, Paris. Photograph: Getty Images

If Roger Federer’s new appellation, “Swiss number two and father of four”, suggests Superman has abandoned his cape and tights for a life of domest(...)

David Ferrer of Spain shakes hands with his compatriot Rafael Nadal after winning their quarter-final match at the Monte Carlo Masters. Photograph: Eric Gaillard/Reuters

Rafael Nadal’s 30-match winning streak ended on Friday when the world number one was upset 7-6(1) 6-4 by fellow Spaniard David Ferrer in the M(...)

Roger Federer hits a return en route to beating Radek Stepanek during the Monte Carlo Masters. Eric Gaillard/Reuters

Roger Federer barely broke sweat as he breezed into the third round of the Monte Carlo Masters with a 6-1 6-2 thrashing of Czech Radek Stepane(...)

Stanislas Wawrinka of Switzerland celebrates winning championship point in his men’s final match against Rafael Nadal of Spain at the Australian Open at Melbourne Park. Photograph: Robert Prezioso/Getty Images

If every champion were as humble as Stanislas Wawrinka, sport would be a very fine place indeed to celebrate all that is admirable about human ende(...)

Stanislas Wawrinka of Switzerland celebrates defeating Rafael Nadal of Spain in the final  of the Australian Open. Photograph:  Petar Kujundzic/Reuters

Stanislas Wawrinka did two extraordinary things in the final of the Australian Open on Sunday: he beat a stricken but resolute Rafael Nadal to win it,(...)

Rafael Nadal of Spain celebrates defeating Roger Federer of Switzerland in their men’s singles semi-final match at the Australian Open in Melbourne. Photograph: Bobby Yip/Reuters

A ruthless Rafa Nadal crushed his great rival Roger Federer 7-6 (4) 6-3 6-3 on Friday in an awesome display of raw power and precision to reach his t(...)