Rafael Nadal finished year-end No. 1 in the ATP Rankings for a fifth time in 2019.
Stefanos Tsitsipas is hoping to improve upon his 2019 season next year.
France will face Serbia, South Africa and Chile in Group A action in Brisbane.
John Isner and Taylor Fritz will suit up for singles at the ATP Cup.
Casper Ruud will lead Norway at next month's ATP Cup.
Casper Ruud will lead Norway at the ATP Cup, to be held 3-12 January in Australia.
Stan Wawrinka was at his best while under pressure serving in 2019.
Andy Murray won his third Grand Slam title at 2016 Wimbledon.
Fabio Fognini will begin next season leading Italy at the inaugural ATP Cup.
Stan Wawrinka is giving fans a glimpse into his preseason training.
Novak Djokovic will match all donations in his foundation's Season of Giving campaign for the second straight year.
Roberto Maytin is the fourth Venezuelan to reach the Top 100 of the ATP Doubles Rankings.
Dante Bottini and Nicolas Jarry are working together in Florida to prepare for the 2020 season.
Alex de Minaur and Nick Kyrgios will be the top two singles players for Australia at the ATP Cup.
David Goffin will be Belgium's No. 1 singles player at the inaugural ATP Cup.
Stefanos Tsitsipas and Michail Pervolarakis will be the No. 1 and No. 2 singles players for Greece, respectively, at the ATP Cup.
Italy will face Russia, the United States and Norway in Group D action in Perth.
Novak Djokovic will lead Serbia at next month's ATP Cup in Australia.
Novak Djokovic is one of 119 players competing in the inaugural ATP Cup.
Bob and Mike Bryan join golf legends Lee Trevino, Jack Nicklaus and Gary Player during the Fore Love tournament.
Two of Rafael Nadal's four victories this season after dropping the first set took place at the Nitto ATP Finals.
Kei Nishikori went unbeaten (5-0) in five-set matches this season.
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