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Tennis

 Bernard Tomic has ruled himself out for Davis Cup duties for the rest of 2017.

Tomic says no to Davis Cup in 2017

Bernard Tomic has all but closed the door on helping Australia reach their first Davis Cup final in more than a decade as he focuses solely on arresting his dramatic rankings slide.

Backhand to the future

Roger Federer of Switzerland plays a backhand in his match against Rafael Nadal of Spain in the final of the Miami Open.

It's not just that Roger Federer at 35 is winning at the same rate as when he was 25. It's not just that he has beaten Rafael Nadal three times in a row for the first time in their long rivalry, all in finals.

Fancy a new ride? Kyrgios posts used car ad on Facebook

Doing things his way: Nick Kyrgios.

"Alright - I don't usually post stuff like this on social media … but special exception this time," the 21-year-old, who's become known as much for his tantrums as he has for his trick shots, posted on Facebook on Wednesday night.

Sock wary of mentally stronger Kyrgios

Kyrgios has been in strong recent form.

Jack Sock has seen the best and worst of Nick Kyrgios and is bracing for more of the former in Australia's Davis Cup quarter-final tie against the United States.

Tennis chiefs mull Twenty20-style revolution

Taking it slow: Rafael Nadal is one of the players who has consistently taken longer than allowed between points.

The possible reforms are an attempt to shorten the length of matches and make the sport as attractive as possible to supporters and television companies, without losing the essence of the sport.