The American was told the tragic news just hours after his first match played at The O2 Arena on Monday.
It’s the final day of round robin play for the Lleyton Hewitt Group, and all four players still have a chance to advance.
Ubitennis looks back at the highs and lows of Wednesday's action at The O2 Arena.
The Croat has claimed only his second ever win in at the season-ending tournament.
This year’s Wimbledon and US Open doubles champion Mike Bryan and Jack Sock overcame world number 1 doubles team formed by Oliver Marach and Mate Pavic...
The ATP is set to launch their newest tournament, but how well will be received by both fans and players?
The top seed continues to live up to his favorites tag following a comprehensive win over the world No.5.
Ubitennis analyses the performance of the 30-year-old heading into the season-ending finale.
Novak Djokovic plays Sascha Zverev for the top spot in the Guga Kuerten Group, while Marin Cilic plays John Isner to stay out of last place.
On a day of straightforward matches, speculation about the future of the event is mounting.
The former world No.1 has responded to allegations made about him by a former top 30 player for the first time.
The 37-year-old has got himself back on track at The O2 Arena in London.
The former grand slam finalist was frank when talking about his lackluster display in London on Tuesday.
The 32-year-old has achieved one of the most one-sided victories in the history of the ATP Finals.
The ATP have launched a new image and initiative in a bid to engage more with casual fans of the sport.
Kevin Anderson plays Kei Nishikori for the top spot in the Lleyton Hewitt Group, while Roger Federer plays Dominic Thiem to stay out of last place.
What we have learned two days into this year’s season-ending tournament.
The 14-time grand slam champion has jumped to the defense of his Swiss rival.
The 14-time grand slam champion was almost impeccable on serve as he didn't face a single break point during his opening match at The O2 Arena.
Marin Cilic and Alexander Zverev give their opinion about the playing conditions in London this year.