Stefanos Tsitsipas, who was the runner at this year's Dubai Duty Free Tennis Championship, has won the ATP Finals title.
He came from a set down to beat Dominic Thiem on Sunday night at the O2 Arena in London.
The 21-year-old from Greece took the match in a pulsating final-set tie-break.
Tsitsipas becomes the youngest winner of the season-ending ATP Finals in 18 years.


Algeria secure 2-1 World Cup win over Jordan
Mbappe double sends France into knockout rounds after lengthy weather delay
Haaland carries Norway past Senegal, into round of 32
Jeremy Doku to rejoin Belgium at World Cup after son's birth
Manchester United secure land for new 100,000-seater stadium
