Rafael Nadal restored order on a day of upsets with a 7-5, 3-6, 6-3 fourth-round victory over big-serving American John Isner at the BNP Paribas Open on Wednesday, after Novak Djokovic and Elena Dementieva were ousted. Seeking his third title at Indian Wells, No. 3-seed Nadal withstood Isner's serve-and-volley game under the searing afternoon sun in front of a partisan crowd backing one of only...

Maria Sharapova has withdrawn from next week's Sony Ericsson Open because of a bone bruise in her right elbow. The tournament announced on Wednesday that second-ranked Dinara Safina and 2008 champion Nikolay Davydenko have also withdrawn. Sharapova, who won the Memphis title last month, withdrew after an MRI scan revealed the injury that is expected to sideline her three to six weeks.

Tennis officials have closed the book on Andre Agassi's drug revelations. International Tennis Federation president Francesco Ricci Bitti told The Associated Press on Wednesday that despite appeals from the World Anti-Doping Agency, the statute of limitations in the case expired long ago and no retroactive punishment was possible.

John Lloyd has resigned as Britain's Davis Cup captain after the team lost to Lithuania this month, dropping to the next-to-last level of the competition. The Lawn Tennis Association also announced Wednesday that American Paul Annacone would no longer be Britain's Davis Cup coach. Instead, he will become the head coach of men's tennis.

Maria Sharapova has signed up to play in the Wimbledon grass-court warmup in Birmingham in June. The 13th-ranked Russian is a two-time champion at the AEGON Classic, having won back-to-back titles in 2004 and 2005. Sharapova said she is looking forward to playing "at this important time in the grass court season." The Birmingham tournament runs from June 7-13 at the Edgbaston Priory.

Andre Agassi told ESPN.com he was "out of line" and apologized for poking fun at Pete Sampras during a charity match last week. Longtime rivals Agassi and Sampras were wearing microphones during the match, and the crowd at Indian Wells Tennis Garden in California could hear an exchange that started lighthearted but turned testy.

Martina Hingis will face top-ranked Serena Williams and two former No. 1 players in World Team Tennis competition. The WTT announced its 10-team schedule on Thursday. Hingis will play for the New York Buzz and face Serena on July 9 at the Glens Falls Civic Center. Hingis is a five-time Grand Slam singles champion and the youngest woman to be ranked No.

U.S. Open champion Kim Clijsters and Caroline Wozniacki will begin their 2010 grass-court seasons at Eastbourne. Clijsters celebrated her return to professional tennis following a two-year layoff with victory at last year's U.S. Open -- where the 26-year-old Belgian beat Wozniacki in the final. She won the Laureus World Comeback of the Year Award on Wednesday for her surprise victory in New York.

Rafael Nadal will return to Queen's this year after he was unable to defend his title at the grass-court tournament in 2009. In 2008, Nadal was the first man to win at the French Open, Queen's Club and Wimbledon in the same year, but his persistent knee problems prevented him from defending his titles on grass at Queen's and Wimbledon last year.

Usain Bolt won his second Laureus Sportsman of the Year award, and Serena Williams won the woman's prize. Bolt won three gold medals at last year's track world championships and set world records in the 100 and 200-meter races. Williams, who also earned the award for a second time, won the Australian Open and Wimbledon titles and regained the No.

Kim Clijsters is still adjusting to her second career as a tennis player. The first full season of the U.S. Open champion's comeback is presenting new challenges: figuring out a balanced schedule, needing more rest than she used to, traveling with her 2-year-old daughter Jada. Oh, and getting everyone fed on time.

Chile secured a spot in the Davis Cup quarterfinals Monday after Fernando Gonzalez defeated Dudi Sela of Israel 6-4, 6-4, 6-3 to give the South Americans an unassailable 3-1 lead in their first-round series. In the second, largely meaningless singles match, Jorge Aguilar of Chile beat Harel Levy of Israel, 7-6 (3), 6-1, to make the final score in the match 4-1.

Britain promises "swift and decisive" action regarding its Davis Cup team following a 3-2 loss to Lithuania. The loss was Britain's fifth in a row under captain John Lloyd and it now has to beat Turkey to avoid dropping to the lowest tier of the competition. Britain, playing without Andy Murray, lost in Vilnius on Sunday to a country with only three players ranked in the top 1,000.