The 30-year-old Russian returned from a 15-month doping ban earlier this year.

Roger Federer has pulled out of the Cincinnati Open with a back injury, meaning Rafael Nadal will be the new world No.1 in next week's rankings.

Bernard Tomic's desire to earn a lifetime of income from the elite ATP tour faces a major setback if his latest fall in world rankings forces him to regularly qualify for tournaments.

Daria Gavrilova fought off nerves and some serious serving problems to beat French world No.13 Kristina Mladenovic in the first round of the Western and Southern Open.

German fourth seed Alexander Zverev upset Roger Federer 6-3 6-4 in the Rogers Cup final in Montreal on Sunday to join the Swiss right-hander as the most trophy-laden player on the ATP Tour this year with five titles.

Nick Krygios' troublesome hip has flared again during a straight-sets loss to fellow young gun Alexander Zverev at the Rogers Cup in Montreal.

Roger Federer has dropped his first set since June but the passage is clear for the resurgent Swiss to add yet another trophy to his glittering season.

• Daniel Cherny

The AFL wants next year's women's grand final to played in the weekend before the men's season starts but is weighing up whether the benefits of ensuring the AFLW season finishes in clear air against the risk the start of the competition will be swamped by Australian Open tennis finals.

Nick Kyrgios has beaten Italy's Paolo Lorenzi in straight sets to progress to the third round of the Rogers Cup in Canada.

Injury-plagued Nick Kyrgios has tasted victory for the first time since May, beating Viktor Troicki 6-1, 6-2 at the Rogers Cup in Montreal.

Having felt the French Open crown slip from her grasp, Samantha Stosur is racing the clock to be fit for another US Open title tilt.

• Simon Briggs

In an unexpected addition to the list of doping excuses, former world No. 5 Sara Errani has been banned for only two months after convincing an International Tennis Federation tribunal that she ingested a banned substance via her mother's tortellini.

Thanasi Kokkinakis will rocket more than 200 places up the rankings despite falling just short of winning his maiden ATP Tour final in Los Cabos, Mexico.

Davis Cup singles matches will continue to be decided over the best-of-five sets after a proposal to shorten the contests failed to achieve the required mandate, the International Tennis Federation announced.

Thanasi Kokkinakis is into the final-four of the Los Cabos Open after a straight-sets quarter-final victory over Taylor Fritz in Mexico.

World No.1 Andy Murray has withdrawn from next week's Canadian Open in Montreal as he continues to recover from a hip injury, Tennis Canada has announced.

Nick Kyrgios has retired from his second-round Washington Open clash with Tennys Sandgren due to a shoulder injury.

Maria Sharapova has withdrawn from the Stanford Classic ahead of her second round match on Wednesday due to soreness in her left arm, the former world No.1 said.

Tennis star Serena Williams has revealed how she was a victim of racism, both on and off the court, and was told she could never accomplish her dreams because of the colour of her skin.

• Darren Kane

Tomic's candid interview followed hours later by Jordan Spieth hoisting aloft the Claret Jug, was as stark as contrasts come.

• COMMENT
• Andrew Webster

The father of the troubled tennis star has always held him back.

• Zoran Milosavljevic

Djokovic will take six months off after consulting doctors and specialists.

Tributes are being paid to Australian tennis great Mervyn Rose, a two-time grand slam singles champion, who has died aged 87.

Novak Djokovic's elbow injury is likely to force the former world No.1 to miss the US Open, Serbian newspaper Sportski Zurnal has reported.

​Pat Rafter has expressed a number of regrets about his dealings with Bernard Tomic and conceded that his four-year tenure as Davis Cup captain was largely unenjoyable.

• Andrew Webster

The troubled tennis star showed glimpses of something other than the brat who turns off most of Australia.

• Peter Doohan

A month or so before his tragic death, Hunter tennis great Peter Doohan took the time to write an email to Newcastle Herald journalist Carrie Fellner about his memories of the 'greatest upset in Wimbledon history'.

Tennis Australia has reached out to Bernard Tomic, believing the controversial Australian star is burnt out.

• Josh Dye

Controversial Australian tennis player says he's 'trapped' and has no love for the game that has earned him millions.