Tenth-ranked Richard Gasquet has pulled out of the Monte Carlo Masters after failing to shake off a back injury.
Kurumi Nara of Japan won her first WTA singles title on Sunday, defeating top-seeded Klara Zakopalova of the Czech Republic 6-1, 4-6, 6-1.
Top-seeded Serena Williams faced some early struggles before defeating Russia's Ekaterina Makarova 7-6 (8), 6-0 in the second round of the Dubai Championships on Tuesday.
Serena Williams says she asked for a wild card into the Dubai Duty Free Tennis Championships to combat boredom once she believed her back injury was on the mend.
Top-ranked Serena Williams withdrew Friday from the Qatar Open and the Indian Wells event because of a back injury sustained last month in the Australian Open.
Medical scans have revealed no serious problems as Rafael Nadal continues his recovery from a back injury sustained at the Australian Open.
Rafael Nadal doesn't expect to miss any tournaments as a result of the back injury that contributed to his loss in the Australian Open final.
Canadian Vasek Pospisil has withdrawn from his scheduled third-round match at the Australian Open against No. 8-seeded Stanislas Wawrinka with a back injury, giving the Swiss player a walkover Friday.
Li Na reached the semifinals of the WTA Championships with a 6-2, 6-1 victory Friday over Victoria Azarenka, who was wincing in pain from a back injury that brought her to tears.
Rafael Nadal is guaranteed to supplant Novak Djokovic atop the rankings after advancing Saturday to the final of the China Open when Tomas Berdych of the Czech Republic retired due to an injury.
Bernard Tomic advanced to the second round of the Thailand Open when Ivo Karlovic retired with a back injury while trailing 6-7 (3), 6-4, 4-2 on Tuesday.
Wimbledon champion Andy Murray will have surgery on a long-standing back problem and miss the rest of the season.
Ayumi Morita of Japan pulled out of the U.S. Open on Sunday because of a lower back injury.
Don't count out Venus Williams for a U.S. Open appearance.
Venus Williams has pulled out of World TeamTennis matches next week because of the back injury that kept her out of Wimbledon.
Venus Williams announced Tuesday that she is skipping Wimbledon because of back problems.