Aliaksandra Sasnovich of Belarus returns to Petra Kvitova of the Czech Republic in their first-round match at  Wimbledon. Photograph: Nic Bothma/EPA

Two-time champion Petra Kvitova slumped out of Wimbledon in the first round on Tuesday, beaten by inspired world number 50 Aliaksandra Sasnovich of Be(...)

Russia’s Darya Kasatkina returns the ball to Denmark’s Caroline Wozniacki during their women’s singles fourth round match on day eight of the Roland Garros 2018 French Open. Photo: Eric Feferberg/Getty Images

American duo Sloane Stephens and Madison Keys reached the French Open quarter-finals for the first time. But second seed Caroline Wozniacki is in dan(...)

Serena Williams of the United States celebrates victory during the ladies singles third round match against Julia Georges of Germany at the 2018 French Open at Roland Garros. Photo: Cameron Spencer/Getty Images

Serena Williams wasted little time ramping up her rivalry with Maria Sharapova after setting up a French Open fourth-round meeting with her old foe. (...)

Romania’s Simona Halep returns the ball to Alison Riske  during their women’s singles first-round match at the Franch Open. Photograph: Eric Feferberg/AFP/Getty Images

Top seed Simona Halep recovered from a slow start to reach the second round of the French Open. The Romanian, a two-time runner-up at Roland Garros, (...)

Denmark’s Caroline Wozniacki reaches for a forehand return in her defeat of Slovakia’s Magdalena Rybarikova  at the Australian Open. Photograph: Vincent Thian/AP

Caroline Wozniacki is three wins away from winning her first grand slam title, but the fear of failing again no long haunts a player who has learned t(...)

Caroline Wozniacki of Denmark serves against Magdalena Rybarikova of Slovakia during their fourth round clash at the Australian Open. Photo: Dean Lewins/EPA

Caroline Wozniacki is confident but taking nothing for granted as she tries to chase down a first grand slam title at the Australian Open. The Dane (...)

Germany’s  Angelique Kerber  celebrates match point against Shelby Rogers of the United States in their third-round match at Wimbledon. Photograph:  Michael Steele/Getty Images

World number one Angelique Kerber and fellow title hopefuls Caroline Wozniacki and Agnieszka Radwanska survived major scares to reach the fourth round(...)

Spain’s Rafael Nadal returns the ball to Netherlands’ Robin Haase during their  match at the French Open at  Roland Garros. Photograph: Eric Feferberg/AFP/Getty

Of the many qualities great athletes share, ruthlessness is among the most apparent. When Rafael Nadal and Novak Djokovic advanced to the third round(...)

Serena Williams will face sister Venus on the quarter-finals of the US Open at Flushing Meadows. Photograph: Reuters

Serena Williams’ historic pursuit of the calendar grand slam was transformed into an emotionally supercharged family affair the world No1 could certai(...)