Top seed Jack Sock was "served off the court" while John Isner and Milos Raonic also exited on a day of upsets at the Delray Beach Open in Florida on Wednesday.
Canadian teenager Denis Shapovalov believes his first season on the ATP Tour has helped him grow into a better player and he is relishing the challenges ahead.
Serena Williams "almost died" after giving birth to her daughter last September, the former women's world number one tennis player wrote in a column for CNN that was published on Tuesday.
Spain's Garbine Muguruza will prepare for the defence of her Wimbledon title by playing the Birmingham Classic on grass in June, the tournament organisers said on Monday.
(This version of February 18th's story corrects the year in the sixth paragraph.)
South African Kevin Anderson put aside memories of his disappointing U.S. Open final when he dominated a third-set tiebreak to win the New York Open with a 4-6 6-3 7-6(1) victory over American Sam Querrey on Sunday.
Twice Wimbledon champion Petra Kvitova stormed back into the world's top 10 for the first time since being stabbed just over two years ago when she beat Spain's Garbine Muguruza in the Qatar Open final on Sunday for her second title of the season.
PYEONGCHANG, South Korea A Russian curling medallist at the Pyeongchang Winter Olympics is suspected of having tested positive for the banned substance meldonium, a source at the Games said on Sunday.
Kevin Anderson gatecrashed Kei Nishikori's comeback party by blasting 23 aces on his way to a tight 6-1 3-6 7-6(4) semi-final victory at the New York Open on Saturday.
New world number one Roger Federer delivered another polished performance to beat Andreas Seppi 6-3 7-6(3) in the semi-final of the ABN AMRO World Tournament in Rotterdam on Saturday.