WIMBLEDON, England - A teenager nicknamed "The Wild Thing" stunned Rafael Nadal and in the process all Wimbledon, recording one of the biggest upsets of the last 25 years.
Nick Kyrgios, 19, a 6-4 Australian with a vicious serve and a positive approach, took apart the top-ranked Nadal, 7-6 (5), 5-7, 7-6 (5), 6-3, on a Tuesday of surprises.
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At 144 in the rankings, Kyrgios is the first player outside of the top 100 to beat a No. 1 since 1992. "On this surface," Nadal said, referring to Wimbledon's grass, "with his serve -- he hit every ball very strongly -- he had what he needs to win."
It was a tough day for current French Open champions, Nadal getting bounced in his fourth-round match only a few hours after Maria Sharapova was defeated by Angelique Kerber, 7-6 (4), 4-6, 6-4.
If that wasn't enough, Serena Williams pulled out after three games of her doubles match with sister Venus because of what the WTA called a "viral illness."
Before the sisters took the court, Serena was examined by a doctor and could be seen sobbing and holding her head. When play began, she was wobbly and nearly whiffed a serve. Finally, the sisters had to forfeit to opponents Kristina Barrois and Stefanie Voegele.
"I thought I could rally this morning," Serena said in a statement, "but this bug got the best of me." The question is whether she was affected in her singles loss Saturday to Alize Cornet.
The transition from clay, the French at Roland Garros, to the lawns of Wimbledon is not easy. Nadal has won the French nine times and Wimbledon twice. But in 2012, Nadal was beaten at Wimbledon in the second round and in 2013 in the first.
"I didn't think I played that bad," said Nadal, who was the No. 2 seed, and then alluding to Kyrgios' serves, "but that's the game on this surface. He did the things you need better than me."
Kyrgios, who 16 months ago was 576th in the rankings and is a wild-card entry here, said: "This is the biggest win of my career. I got so much confidence now from this."
He plays Canadian Milos Raonic in the quarters.
Sharapova had lost only seven games in her three previous matches, but she made more than 50 unforced errors against Kerber, who never had beaten a top 10 player in a major until defeating the fifth-ranked Sharapova.
"Today could have gone either way," Sharapova said, "and it didn't go my way."
In the final set, Sharapova saved six match points before finally losing. "I worked too hard within the match to let it go the easy way," she sighed.
Roger Federer made the quarterfinals with a 6-1, 6-4, 6-4 win over Tommy Robredo. He will meet Stan Wawrinka next.