Rafael Nadal

The Grand Slam Board have announced a host of rule changes, including the introduction of a 25-second shot clock to be implemented in Melbourne.

Grigor Dimitrov won the ATP Tour Finals in London while runner-up David Goffin beat Nadal and Federer on his way to the finals.

The duo have won everything there is to win – 16 Grand Slams, 30 Masters Series titles and two Olympic gold medals.

Federer had a disappointing end to the 2017 campaign after losing the ATP World Tour semi-finals to David Goffin.

Former British number one Greg Rusedski believes Roger Federer will be rueing his missed chance of winning the ATP Finals after the absence of Rafael Nadal and Novak Djokovic.

Federer pinpointed the loss to Tommy Haas in Stuttgart and to Evgeny Donskoy in Dubai which cost him the spot.

With the expected return from injury of Novak Djokovic, Andy Murray, Stan Wawrinka, Kei Nishikori and more, Roger Federer is expecting an "epic" start to the new year.

Federer had a disappointing end to the 2017 campaign, losing the ATP World Tour semi-finals to David Goffin.

Federer explained that he would earlier be ecstatic at the prospect of sharing the court with the legends of the game.

Rafael Nadal saw off the challenge from Federer and claimed the year-end number one ranking for the fourth time in his career.

The Swiss veteran won seven titles this year, including the Australian Open and a record eighth Wimbledon title, to overtake Pete Sampras' seven championship wins.

British tennis has adopted an extra week in the calendar - but interest in the ATP World Tour Finals is diminishing.

The Swiss ace skipped the entire clay court swing of the season this year following a blistering start to the season.

Federer made it three wins from three in the round robin stage of the season-ending tournament, with a victory over Marin Cilic in straight sets.

Roger Federer lost his chance of claiming the world No.1 ranking when he withdrew from the Paris Masters.

Rafael Nadal pulled out of the ongoing ATP World Tour Finals in London owing to a knee injury that has troubled him since the Shanghai Masters in October.

Grigor Dimitrov has credited world number one Rafael Nadal for helping turn his season around after the duo trained with each other in Mallorca.

Roger Federer was a contender for the year-end world number one spot but was beaten to it by long-time rival Rafael Nadal.

Former world number one Mats Wilander believes despite the lack of success for the next generation, the experience of playing Rafael Nadal and Roger Federer will prove crucial.

Federer backed Zverev, Shapovalov and Kyrgios to emulate members of the current big four after his win over Zverev at the ATP Finals in London.

World number one Rafael Nadal is in danger of missing out on the 2018 Australian Open after pulling out of the ATP Finals due to a recurring knee injury.

Rafael Nadal's decision to play the ATP Finals in London has been questioned after he was forced to withdraw after just one match.

Former British number one Annabel Croft believes Roger Federer will only retire when he stops enjoying the sport of tennis.

Roger Federer holds the record for the most number of Grand Slam titles and number of weeks as the No.1 but has a poor head-to-head record against his longtime rival Rafael Nadal.

Rafael Nadal has withdrawn from the ATP World Tour Finals after his knee injury flared up during his loss to David Goffin on Monday (13 November).

Roger Federer was favourite to become world No1 going into the second-half of the campaign until he suffered a back injury during the Montreal Masters.

Roger Federer does not agree with Rafael Nadal's viewpoint that the ATP Finals in London should be played on clay.

Roger Federer revealed that he feels fully fit after coming through unscathed in his first group stage win over Jack Sock at the ATP Finals in London on Sunday, 12 November.

Marin Cilic has given his assessment on whether Rafael Nadal and Roger Federer benefited from the 2017 absences of Novak Djokovic and Andy Murray.

Agassi says Nadal's end of the year performance is "never quite the same as the middle or the beginning".