Maria Sharapova reached the US Open's fourth round by taking five of the last six games after her opponent, Sabine Lisicki, was warned by the chair umpire about receiving coaching help.
After Lleyton Hewitt's departure from the US Open, questions loom as to how many more early exits he has.
Along with her 17 major titles, Serena Williams also has had some major drama. Here's a look at five of the strange twists in her career.
Kei Nishikori of Japan beat Colombia's Santiago Giraldo 6-2, 6-2 to win the Barcelona Open on Sunday for his first career title on clay.
No. 2 seed Victoria Azarenka was somewhat rattled after dropping the first set to No. 26 Alize Cornet, but thrived under the pressure to take the match.
Caroline Wozniacki advanced to the second round of the New Haven Open when Peng Shuai was forced to retire while up a set on the four-time tournament champion Monday night.
Quite frankly, this one was exhausting to watch. But Rafael Nadal ended his marathon semifinal in a familiar place.
Victoria Azarenka lost her temper, broke her racket and argued with the chair umpire in an exit Wednesday from the Madrid Open, where she's been runner-up the last two years.
Kei Nishikori was walking past Marinko Matosevic, ready to switch ends after winning the first set 6-4. The Australian stopped him near the umpire's chair.
In an epic five-set match, David Ferrer emerged from under the daunting shadow of fellow Spaniard Rafael Nadal by outlasting Janko Tipsarevic in a classic battle to reach the U.S. Open semifinals.
Roger Federer had to stave off a comeback instead of making one Monday, holding off Xavier Malisse in four sets to reach the Wimbledon quarterfinals.
Rafael Nadal was upset in the second round by Lukas Rosol, while Andy Murray, Andy Roddick and Brian Baker advanced to the third round at Wimbledon.
His big lead over Novak Djokovic in Sunday's drenched French Open final slipping away, Rafael Nadal tossed a soaked, clay-smeared tennis ball toward the chair umpire.
Roger Federer has been playing well out of the favorite spotlight. Can he maintain that internal calm as his last shot at his Olympic dreams approaches or if he gets within striking distance of the No. 1 ranking?
Maria Sharapova benefited from a chair umpire's overrule on the disputed final point Thursday and edged Caroline Wozniacki 4-6, 6-2, 6-4 in the semifinals at the Sony Ericsson Open.
There are a handful of players who need a title, but none more so than Maria Sharapova.