The season-ending ATP Finals features the season's best eight players in a round-robin format followed by a semifinal and final, and is widely considered the fifth most important tournament of the year.
This year there is additional interest around the tournament as it will determine the year-end No. 1 ranking - Novak Djokovic and Rafael Nadal are locked in a tight battle for the top spot. Moreover, Roger Federer will be looking to salvage something out of a largely disappointing 2019 season, while tournament debutantes Daniil Medvedev, Stefanos Tsitsipas and Matteo Berrettini will be hoping to make the most of their opportunity.
23 different players have won the season-ending ATP Finals. Let us meet the last 5 players to have lifted the title at the prestigious tournament:
#5 Alexander Zverev (2018)
Making his second appearance at the season-ending ATP Finals in London in 2018, Alexander Zverev beat Marin Čilić and tournament debutant John Isner in straight sets while losing his lone group-stage match to Novak Djokovic.
In the semifinal, Zverev beat six-time champion Roger Federer in straights to set up a rematch with five-time champion Djokovic for the title.
Courtesy a late break in the ninth game of the set, Zverev took a one-set lead. Following an early exchange of breaks in the second, Zverev broke Djokovic for the second time in the set to seal the biggest title of his career.
In the process, Zverev became the first player to beat Federer and Djokovic at the same edition of the ATP Finals, the first player since Andre Agassi (1990) to beat the top two seeds in the semifinal and final, and the first German winner (third overall) at the tournament since Boris Becker in 1995.