WIMBLEDON, ENGLAND - The first raindrops of the week fell on Wimbledon on Friday, but former champion Serena Williams was beaming like a ray of sunshine after dispatching Amelie Mauresmo 7-6 (5), 6-1 in a third-round battle of former champions.

And then, Williams' half of the draw flung wide open when top seed Ana Ivanovic was humiliated and eliminated by 133rd-ranked Chinese wild card Zheng Jie.

Ivanovic had just taken over the tennis throne after her French Open victory, and the congenial Serb entered Wimbledon with much fanfare. But her troubles began in the second round, when a lucky net cord saved her from losing to Nathalie Dechy. Then, on Friday, Zheng, a 5-4 doubles specialist, dominated the 6-1 Ivanovic with her powerful low shots in a 6-1, 6-4 victory.

"I learned everyone is going to be so pumped against you and they're going to try to perform the best they can," Ivanovic said, explaining what she has learned since taking over the No. 1 ranking after Justine Henin's retirement. "They have nothing to lose. It's something you have to accept and, with time, learn to deal with."

Ivanovic's loss means the highest-seeded players left on Williams' path to the final are No. 4 Svetlana Kuznetsova, No. 8 Nicole Vaidisova and No. 14 Agnieszka Radwanska.

But first she must get past Bethanie Mattek, a 23-year-old fellow American who might not have Williams' power or pedigree but certainly matches her boldness in fashion.

Associated Press, Star Tribune
Friday’s upset let Ana Ivanovic experience a pitfall of being a world No. 1. “Everyone is going to be so pumped against you,” she said.

Most of the coverage 69th-ranked Mattek received before this week was for her eccentric outfits. She has shown up on the U.S. Open courts in low-cut leopard-print getups, been fined for trying to play in a cowboy hat, and two years ago at Wimbledon wore soccer knee socks in honor of the World Cup.

"Granted, the outfits were ... unusual, but I really appreciated her courage," Williams said. "Her personality is so good, and the courage you have to wear something like that goes a long way with me."

Mattek said it's been fun shocking people, but this week she opted for a more understated look. Turns out her shots can be as varied as the outfits in her closet, as she showed in a 6-4, 6-1 victory over 2007 Wimbledon finalist Marion Bartoli.

Mattek had never gotten past the second round at a Grand Slam, so her improbable run here is "a pretty cool" result.

"I'm still outgoing, like to show my personality," Mattek said. "But I really wanted to have my tennis come through."

On the men's side Friday, top seed Roger Federer cruised past Marc Gicquel 6-3, 6-3, 6-1. His next opponent is Lleyton Hewitt, the last man to win Wimbledon before Federer began his five-year reign.

Bobby Reynolds, who was the final American man alive, lost to Feliciano Lopez, and Mario Ancic, the last man to beat Federer at Wimbledon, upset No. 5 David Ferrer.