Thiem victorious in ATP Finals opener, beats Tsitsipas in rematch

Dominic Thiem outlasted Stefanos Tsitsipas in a rematch of the 2019 final, beating the defending champion 7-6 (5), 4-6, 6-3 Sunday in the opening singles match at the ATP Finals inside a largely empty O2 Arena in London, England.

ATP Finals: Tsitsipas overcomes Thiem to win title - Read Tennis

Dominic Thiem Signs Up To New Athlete Management Agency Launched By Kosmos - UBITENNIS

Stefanos Tsitsipas Outlasts Dominic Thiem to Win ATP Finals - The New York Times

Petra_Kvitova

ATP Finals: Rafael Nadal off to positive start but players feel absence of fans inside O2 Arena

ATP Finals: Tsitsipas Downs Thiem To Claim Biggest Career Title - The Busy Buddies

Thiem gets past Djokovic in 3-set semifinal at ATP Finals - BVM Sports

Stefanos Tsitsipas beats Dominic Thiem to win ATP Finals title - CGTN

Thiem kicks off Nitto ATP Finals with three-set win over Tsitsipas