Flavia Pennetta pulled out of the Gastein Ladies clay-court event with an ankle injury shortly before her opening match on Monday.
Top-seeded Grigor Dimitrov advanced to the final of the Nastase Tiriac Trophy on Saturday when Gael Monfils had to retire with an ankle injury in the first set.
Two-time Key Biscayne champion Victoria Azarenka has withdrawn from the upcoming Sony Open because of a lingering foot injury.
Top-seeded Carla Suarez Navarro advanced to the Brazil Cup semifinals Thursday after No. 5-seeded Monica Niculescu of Romania retired with an apparent right ankle injury.
You'd be forgiven for giving up on Sam Querrey, but he's proving he's far from done.
American John Isner retired from his first-round match at the Australian Open with an ankle injury after losing the first two sets to Slovakian Martin Klizan 6-2, 7-6 (6).
Top-ranked Novak Djokovic is unsure whether he'll play at the Monte Carlo Masters this week, even though he is optimistic his right ankle injury is healing.
Novak Djokovic wasn't optimistic about his right ankle injury after lifting Serbia to an insurmountable 3-1 lead over the U.S. with a 7-5, 6-7 (4), 6-1, 6-0 win over Sam Querrey in a Davis Cup quarterfinal.
An ankle injury has forced two-time champion Victoria Azarenka to withdraw at the Sony Open, and American Lauren Davis has quickly gone from being a lucky loser to a lucky winner.
Two-time champion Victoria Azarenka withdrew from the Sony Open before her opening match Friday because of a lingering right ankle injury.
Defending champion Victoria Azarenka has withdrawn from the BNP Paribas Open because of a right ankle injury that had been bothering the world's second-ranked player since before the tournament began.
Li Na has pulled out of next week's Qatar Open because of the ankle injury she sustained in the Australia Open final.
Serena Williams has moved into the third round of the Australian Open with a 6-2, 6-0 win over Garbine Muguruza of Spain on Thursday.
Serena Williams showed no ill effects of the ankle injury she had suffered two days earlier. In fact, she appeared increasingly mobile as the match progressed, despite the stifling heat.
Serena Williams overcame a right ankle injury to win her first match at the Australian Open, routing Edina Gallovits-Hall 6-0, 6-0 on Tuesday.
Kei Nishikori of Japan has pulled out of his third-round match against Gilles Simon at the Paris Masters because of a recurring right ankle injury.