Andy Murray shrugs off the potential threat of the Zika virus as well as the absence of two of his leading rivals on Tuesday as he prepares to defend his Olympic title.

World number 11 and former Australian Open runner-up Dominika Cibulkova joins the Olympic Games tennis tournament's growing list of absentees.

World number four Stan Wawrinka withdraws from the Rio Olympics with a back injury on Tuesday.

Novak Djokovic, Andy Murray, Rafael Nadal and Serena Williams will display their Grand Slam talents in Rio, but with serious questions being asked over tennis's place in the Olympics after a host of high-profile pull-outs.

Rafael Nadal concedes he is not yet sure that he will be able to represent Spain at the Rio Olympics as his fitness concerns linger.

World number one Novak Djokovic continues his dominance of Kei Nishikori with a 6-3 7-5 victory in the final of the Rogers Cup in Toronto on Sunday.

Frenchman Gael Monfils maintains his run of brilliant form when he nullifies Milos Raonic's big serve to eliminate the local favourite in Toronto.

Top seed Novak Djokovic breezes into the quarter-finals as the Rogers Cup continues pretty much according to script at the Aviva Centre on Thursday.

Roger Federer says he will miss the remainder of the season, including next month's Olympic Games in Rio.

​World number one Novak Djokovic is looking forward to playing on his favoured hardcourt surface at the Rogers Cup in Toronto, but the Serb urged caution as he returns to action for the first time since his shock Wimbledon exit.

Roger Federer and Rafael Nadal on Tuesday pull out of next week's Toronto Masters, joining Wimbledon champion Andy Murray in deciding to skip the event.

Teenager Borna Coric complete an unlikely comeback for Croatia as the small Balkan nation beat the United States 3-2 in a Davis Cup quarter-final in Oregon.

Wimbledon runner-up Milos Raonic and women's world number five Simona Halep deal the Olympics tennis tournament a double blow by pulling out of Rio, citing health fears over the Zika virus.

The 2016 US Open, the fourth and final Grand Slam of the year, will dish out a record $46.3 million in prize money, including $3.5 million for the men's and women's singles champions.

Wimbledon champion Andy Murray will miss Britain's Davis Cup quarter-final clash against Serbia with captain Leon Smith naming Kyle Edmund and James Ward as his two singles players on Wednesday.

The Court of Arbitration for Sport (CAS) said Monday it has put back its ruling on the two-year doping ban for Maria Sharapova for two months to September, ruling the tennis superstar out of the Rio Olympics.

A Court of Arbitration for Sport decision on the two-year doping ban for Maria Sharapova has been put back two months to September, the court said Monday, ruling the tennis superstar out of the Rio Olympics.

Spanish tennis ace Rafael Nadal has said that he had no intention of missing out on the Olympic Games starting from August 5 in

Serena Williams powered to her seventh Wimbledon crown as the world number one finally claimed a record-equalling 22nd major title with a 7-5, 6-3 victory over Angelique Kerber in Saturday's final.

Andy Murray showed his never-say-die spirit to battled into the semi-finals in a Centre Court classic on Wednesday.