Roger Federer of Switzerland holds up the trophy as he celebrates winning his match against Bulgaria's Grigor Dimitrov in two sets, 6-2, 6-2, in the men's singles final of the ABN AMRO world tennis tournament at the Ahoy stadium in Rotterdam, Netherlands, Sunday, Feb. 18, 2018. (AP Photo/Patrick Post)

Roger Federer caps off sensational week becoming World No.1 again with 97th career title

Federer overpowered an ailing Grigor Dimitrov 6-2, 6-2 in less than an hour.

Artem Sitak loses New York Open doubles final in tiebreaker

Sitak and Dutch partner Wesley Koolhof were beaten 6-4 4-6 10-6 in an 88-minute decider by the tournament's second seeds.

Kiwi tennis player Artem Sitak reaches doubles final of New York Open

Victory in the final alongside partner Wesley Koolhof would see Sitak lifted into the doubles rankings' top 50.

MELBOURNE, AUSTRALIA - JANUARY 26:  Roger Federer of Switzerland plays a backhand in his quarter final match against Tomas Berdych of the Czech Republic during day nine of the 2016 Australian Open at Melbourne Park on January 26, 2016 in Melbourne, Australia.  (Photo by Cameron Spencer/Getty Images)

Roger Federer aiming for 97th career title after dispatching Andreas Seppi in straight sets

Federer faces Grigor Dimitrov in the final of the ATP event in Rotterdam.

14th November 2017, O2 Arena, London, England; Nitto ATP Tennis Finals; Roger Federer (SWZ) returns backhand to Alexander Zverev Jr (GER)

Roger Federer adds another milestone to age-defying career as 36-year-old becomes oldest World No.1 in history

"This one, because I'm a little bit older, is a little bit more special," Federer said.

Michael Venus during the ASB Classic

Michael Venus knocked out in first round of ATP doubles event in Netherlands

Venus and partner Raven Klaasen lost in three sets to the top seeds.

Serena Williams ends 13-month hiatus from tennis with Fed Cup doubles match alongside sister Venus

Serena showed glimpses of her dominant self in the dead-rubber match against the Netherlands.

Serena Williams (USA) def Venus Williams (USA)

Serena Williams to make competitive return in Fed Cup doubles

The 23-time Grand Slam champion hasn't played competitively since giving birth in September.

Serena Williams (USA) def Venus Williams (USA)

'She has a lot of pride' - US Fed Cup captain says Serena Williams ready to return to tennis after daughter's birth

Williams has not played a WTA tournament since she won the Aussie Open title last year.

Nick Kyrgios pinpoints elbow injury, not pressure, for Davis Cup loss

Kyrgios struggled in his straight sets loss to Alex Zverev.

Nick Kyrgios returns to tantrum-throwing ways, smashes racquet during Davis Cup loss

The hot-headed Aussie lost his cool in the 6-2 7-6 6-2 loss to Germany's Alex Zverev.

Nick Kyrgios stands with his trophy after winning the Brisbane International.

Fatigued Nick Kyrgios gets boost returning to Brisbane for opening Davis Cup match

Kyrgios is happy to return to where he won his first title on home soil.

BRISBANE, AUSTRALIA - JANUARY 06:  Bernard Tomic of Australia plays a forehand in his match against Radek Stepanek of the Czech Republic during day four of the 2016 Brisbane International at Pat Rafter Arena on January 6, 2016 in Brisbane, Australia.  (Photo by Chris Hyde/Getty Images)

Australian legend says Bernard Tomic's career may be over

Lleyton Hewitt is refusing to have Tomic in his Davis Cup team.

Roger Federer hungry for more after Australian Open triumph - 'I've won three slams now in 12 months'

Federer could even return to world No.1 with victory in his next event.

'It's just a number' - Roger Federer not letting age stop quest to rewrite record books

The Swiss maestro claimed his 20th Grand Slam title at the Australian Open last night.

Marin Cilic ends Kyle Edmund's Grand Slam dream to make Australian Open final

The world number six defeated the Brit in straight sets last night.

MELBOURNE, VIC - JANUARY 25: Simona Halep of Romania plays a shot in her semi-final match during the 2018 Australian Open at Melbourne Park Tennis Centre in Melbourne, Australia. (Photo by Jason Heidrich/Icon Sportswire via Getty Images)

Simona Halep set to face Caroline Wozniacki in Aussie Open final after thrilling semi-final

Halep and Wozniacki will both be chasing an elusive first grand slam triumph on Saturday night - as well as duelling for the world's top ranking.

MELBOURNE, AUSTRALIA - JANUARY 25:  Caroline Wozniacki of Denmark plays a forehand in her semi-final match against Elise Mertens of Belgium on day 11 of the 2018 Australian Open at Melbourne Park on January 25, 2018 in Melbourne, Australia.  (Photo by Clive Brunskill/Getty Images)

Caroline Wozniacki beats Elise Mertens to cement Aussie Open final spot

Wozniacki will face either world No.1 Simona Halep or 2016 champion Angelique Kerber on Saturday.

Roger Federer wary of Australian Open semi with unheralded South Korean sensation Hyeon Chung

"I hardly know him. In a way I like it, because it's really something totally new to me."

Watch: US tennis player goes on bizarre rant in press conference meltdown after Aussie Open loss

Tennys Sandgren was upset media looked at his Twitter history and wrote stories about it.

Roger Federer continues charge at Australian Open with straight sets quarter-final win over Tomas Berdych

The Swiss master continues to amaze in Melbourne with a 7-6 6-3 6-4 win.

Kiwi Marcus Daniell bows out of Aussie Open after doubles quarter finals loss

Daniell and Britain's Dominic Inglot have lost in three hard-fought sets to bow out of the Australian Open men's doubles..

Angelique Kerber marches into Aussie Open semi-finals after humiliating US rival in straight sets

Kerber dispatched her American rival Madison Keys 6-1, 6-2 in Melbourne.

Serena Williams (USA) def Venus Williams (USA)

Serena Williams to make return to tennis next month

Williams will play her first competitive match since becoming a mother at the Fed Cup.

Video: 'It just happened!' Frustrated Rafael Nadal fends off questions about injury

The world No.1 withdrew in the fifth set of his Australian Open quarter-final with a leg injury.

MELBOURNE, AUSTRALIA - JANUARY 23:  Grigor Dimitrov of Bulgaria falls in his quarter-final match against Kyle Edmund of Great Britain on day nine of the 2018 Australian Open at Melbourne Park on January 23, 2018 in Melbourne, Australia.  (Photo by Cameron Spencer/Getty Images)

'It hurts, and so it should' - Grigor Dimitrov ruing another missed chance at Aussie Open

The flip side of Kyle Edmund's upset is the world No.3 is still left chasing his first grand slam title.

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