Novak Djokovic has made the ideal start in his quest to win a record-equalling sixth ATP Finals title.
The world number two easily beat Italy's Matteo Berrettini in straight sets at the O2 Arena in London.
However, things weren't as rosy for Roger Federer, who was beaten by Dominic Thiem in his tournament opener.
It's the second year in a row that the seven-time Dubai Duty Free Tennis Championships winner has lost his opening match at the ATP Finals.
Chelsea confirm Xabi Alonso appointment on four-year deal
Chelsea have confirmed the managerial appointment of former Real Madrid coach Xabi Alonso on a four-year contract.
McIlroy roars back into contention with third-round 66 at PGA Championship
Rory McIlroy roared back into contention at the PGA Championship with a third-round 66 on Saturday at Aronimink, recovering from his disastrous opening round to revive hopes of a second straight major title.
Semenyo magic hands Man City 1-0 FA Cup win over Chelsea
Manchester City's Antoine Semenyo produced a moment of magic to win the FA Cup on Saturday, a 1-0 victory over Chelsea completing an English cup double for Pep Guardiola's side.
FIFA says it held positive talks with Iran's FA ahead of World Cup
FIFA Secretary-General Mattias Grafstrom held a constructive and positive meeting with Iran's FA (FFIRI) President Mehdi Taj on Saturday, he told Reuters, expressing confidence about the country's participation at this year's World Cup.
Latest With Hit
Akhil Kavalayoor live on Radio Active
Latest With Hit
Watch Dona & Jean as they grove to SakkathaGavle !
Latest With Hit
Ted X speaker, AI trainer Raul John Aju giving us AI lessons.
