Injury appears to have played a role in Nick Kyrgios losing his first match since his Shanghai shenanigans.

Fatigue and injury have combined to curtail Daria Gavrilova's Kremlin Cup campaign - and almost certainly the Australian No.1's hopes of qualifying for the Elite Cup.

Bernard Tomic's forgettable tennis season has continued, with the 24-year-old losing in the final round of qualifying for the Antwerp ATP 250 event.

• Simon Briggs

Roger Federer's fantasy season continued on Sunday as he beat Rafael Nadal 6-4, 6-3 to lift the Shanghai Masters trophy.

World number one Rafael Nadal beat Croatian Marin Cilic on Saturday to set up a mouth-watering clash with Swiss Roger Federer in the Shanghai Masters final.

Hong Kong Daria Gavrilova has reached her first final since August, the Australian seventh seed defeating American Jennifer Brady 6-0, 7-5 at the Hong Kong Open.

• Bill Scott

Samantha Stosur is out of the Hong Kong Open after a straight-sets quarter-final loss to Wang Qiang.

There will be at least one Australian in the last four of the Hong Kong Open with Daria Gavrilova and Lizette Cabrera set to do battle in the quarter-finals.

Rafael Nadal has continued to scythe his way through the Shanghai Masters, reaching the quarter-finals with a 6-3 6-1 thrashing of temperamental Italian Fabio Fognini.

Samantha Stosur has marched into the quarter-finals of the Hong Kong Tennis Open with victory over world No.18 Agnieszka Radwanska.

Nick Kyrgios has been fined almost $A40,000 by the ATP after walking off the court during his opening match at the Shanghai Masters.

• David Polkinghorne

Not even Nick Kyrgios's new-found motivation can stop the Groundhog Day that his tennis career has become.

• Phil Lutton

With the Australian Open her target, Serena Williams could make her competitive return at the Brisbane International, where organisers are still welcoming Nick Kyrgios with open arms despite his latest drama.

• UPDATED
• Darren Walton

Nick Kyrgios has sensationally quiting his first-round match at the Shanghai Masters in apparent protest against the umpiring.

• Jon Pierik

Serena Williams has revealed she is aiming to make her comeback to grand slam tennis at the 2018 Australian Open.

• Jon Pierik

Bernard Tomic may have to seek a wildcard into the 2018 Australian Open unless his ranking dramatically improves before the end of the year.

• Caden Helmers

Nick Kyrgios has revealed his desire to build a facility for disadvantaged kids.

Lleyton Hewitt has implored Bernard Tomic "to put the work in" or face the prospect of wilting during the brutal Australian summer of tennis.

• Darren Walton

Rafael Nadal is urging Nick Kyrgios to "keep going" after consigning the combustible Australian to an explosive straight-sets loss in the China Open final.

​An agitated Nick Kyrgios has lost the China Open final to world No.1 Rafael Nadal.

Nick Kyrgios has kept alive his hopes of qualifying for the ATP finals by beating Alexander Zverev to reach the final of the China Open in Beijing.

Simona Halep will take over as the new No.1 in the WTA world rankings after progressing to the China Open final with a dominant 6-2, 6-4 victory over Latvia's Jelena Ostapenko in Beijing on Saturday.

• Sandra Harwitt

Eighth-seeded Nick Kyrgios has advanced to the semi-finals of the China Open in Beijing.

Daria Gavrilova has let slip a big opportunity with a costly third-round loss at the China Open in Beijing.

Nick Kyrgios has a big serve but he may have an even bigger heart.

• Jocelyn Noveck

Tennis icon Billie Jean King is not mincing words about the many white women who voted for Donald Trump, saying they "really don't like themselves".

Bernard Tomic's revival has been short-lived, with the fallen Australian star crashing out of the Japan Open in less than an hour.

• Chris Dutton

Kyrgios will donate $50 for every ace he hits for the rest of the year after joining Monica Puig.

• Nicole Economos

The first-born's initials are a reference to Williams' Australian Open win while pregnant earlier this year.