Alexander Zverev has beaten Rafael Nadal in their opening round-robin match of the ATP Finals.
The loss dents Nadal's chances of ending the year as the number one ranked tennis player in the world.
He entered the season-finale in London with an abdominal injury.
Tuesday's match sees Roger Federer, who also lost his opening encounter, take on Italy's Matteo Berrettini.
Play gets underway at 6:00 pm UAE time.
Man City blow 3-0 lead to extend winless run in Feyenoord thriller
Manchester City blew a 3-0 lead to draw 3-3 against Feyenoord in a Champions League thriller on Tuesday and extend their winless run to six games.
Saim guides Pakistan to comprehensive win over Zimbabwe
Saim Ayub hammered a swashbuckling century as Pakistan made short work of a modest target to beat Zimbabwe by 10 wickets in Bulawayo and square the three match one day international series.
Tommy Fleetwood joins 2025 Hero Dubai Desert Classic line-up
European Ryder Cup star Tommy Fleetwood has confirmed his participation in the 2025 Hero Dubai Desert Classic, adding more excitement to the prestigious event scheduled for January 16-19 at Emirates Golf Club.
Tiger Woods to miss Hero World Challenge
Tiger Woods will not compete in the December 5-8 Hero World Challenge in Albany, Bahamas, the 15-times major winner said on Monday, extending his long absence from competition.
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