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.
Inter sign England defender Spence from Tottenham
Inter Milan have signed England international winger Djed Spence from Tottenham Hotspur on a contract running until June 30, 2031, the Serie A club said on Saturday.
Eight-try All Blacks thump Bulls 50-19 in Pretoria
New Zealand ran in eight tries as they thumped South Africa’s Bulls 50-19 in their latest Rugby’s Greatest Rivalry tour fixture in Pretoria on Saturday, an impressive warm-up ahead of the first test against the Springboks next weekend.
PSG sign Spain forward Torres from Barcelona
Paris St Germain have signed Spain's World Cup-winning forward Ferran Torres from Barcelona on a contract until 2031, the two clubs announced on Saturday.
Spain's Perez sets women's half marathon race walk world record
Spain's Maria Perez has established the inaugural world record for the women's half-marathon race walk with a time of one hour 30 minutes and six seconds when winning the gold medal at the European Athletics Championships on Saturday.
Atletico Madrid sign Spurs captain Cristian Romero
Atletico Madrid have signed Tottenham Hotspur captain Cristian Romero until June 2031 after five seasons in north London, the Spanish club said on Saturday.
