Roger Federer said respected umpire Mohamed Lahyani was wrong to get out of his chair to give Nick Kyrgios a controversial pep-talk at the US Open on Thursday which sparked a row over impartiality of officials in the sport.

It takes something special to grab the spotlight on a Friday night in the Big Apple but few contests attract more attention than Williams v Williams and the tennis sisters have New York buzzing as they prepare to clash for a 30th time.

A frustrated umpire controversially climbs out of his chair to give Australian Nick Kyrgios a pep talk, telling him: "I want to help you".

Andy Murray's first Grand Slam in more than a year ended with a second-round exit at the US Open, where he fell in four sets to Spain's Fernando Verdasco on Wednesday.

Roger Federer questioned Gerard Pique’s involvement in the controversial Davis Cup rebrand, opining that it was 'odd' to see a football player involved in the tennis competition's revamp.

Wimbledon champion Novak Djokovic suffered in sweltering US Open conditions Tuesday but battled through to the second round with a 6-3, 3-6, 6-4, 6-0 victory over Hungarian Marton Fucsovics.

Marin Cilic clinches a second-round berth at the U.S. Open after opponent Marius Copil of Romania retires hurt in the third set trailing the seventh-ranked Croat 7-5, 6-1, 1-1

Novak Djokovic suffers in sweltering US Open conditions but holds on to reach the second round with a 6-3, 3-6, 6-4, 6-0 victory over Hungarian Marton Fucsovics.

Serena Williams made a triumphant return to the US Open on Monday, launching her bid for a record-equalling 24th Grand Slam victory with a straight-sets win.

Briton Andy Murray beat Australia's James Duckworth 6-7(5), 6-3, 7-5, 6-3 in the U.S. Open first round, which is the former champion's first Grand Slam match in more than a year.

Two-times U.S. Open champion Venus Williams outlasts Svetlana Kuznetsova 6-3 5-7 6-3 in a marathon battle on a brutally hot day at Arthur Ashe Stadium to reach the U.S. Open second round.

World number one Simona Halep was swept aside 6-2, 6-4 by 44th-ranked Kaia Kanepi yesterday, the first top-seeded woman ever to lose in the US Open first round.

The US Open will begin from tonight and the fourth Grand Slam of the year will see all of the big names returning to action. Scotland's Andy Murray, who won the event at Flushing Meadows in 2012, will return from a year-long lay-off.

From the pits of despair in Paris, record-setting Novak Djokovic now eyes a third US Open title in New York where for the first time since Wimbledon last year, the sport's 'Big Four' will be reunited.

World number one Rafael Nadal is feeling rested and ready as he looks to defend his US Open title.

Uzbekistan's Denis Istomin scooped Asian Games tennis gold in Indonesia on Saturday before jumping on a flight round the world to compete in the US Open.

Five-time winner Roger Federer is in the same quarter of the draw of the US Open as twice champion and sixth-seeded Novak Djokovic.

Novak Djokovic ended a career-long jinx, lifting the trophy in Cincinnati at last to complete a matched set of Masters 1000 titles.

Novak Djokovic finally got the title that had been missing from his resume as the Serb defeated Swiss world number two Roger Federer, his greatest rival, 6-4 6-4 to win the Cincinnati Masters on Sunday.

World number two Roger Federer posted his second win of the day, amid a lightning fear interruption, to reach the semifinals of the ATP-WTA Cincinnati Masters on Friday.