WIMBLEDON, England --- About 18 months removed from his last Grand Slam championship, Roger Federer figures it's about time for another -- his record-tying seventh at Wimbledon.
Despite nearly a year away from the game because of a series of health scares, Serena Williams warns that she "wouldn't bet against" herself.
Rafael Nadal has yet to drop a set through three matches -- something he'd never managed to do at the All England Club.
As the 125th edition of the tournament heads into Week 2, all of the principal players are still around, as are the story lines that drew interest at the start, from the Williams sisters' comebacks to the dominance of the leading men.
After Sunday's traditional day of rest at Wimbledon, action resumes today with all 16 men's and women's fourth-round matches. Two stand out: Top-seeded Nadal faces No. 24 Juan Martin del Potro, while No. 23 Venus Williams faces No. 32 Tsvetana Pironkova in a rematch of a 2010 quarterfinal won by the Bulgarian.
The Williams sisters have combined to win nine of the past 11 Wimbledon singles titles. Serena has played only five matches in the past 111/2 months, and Venus missed about five months with a hip injury.
"Yeah, I'm still alive, and it feels good," Serena said. "You know, I'm hoping to be around -- and planning to be around -- a lot longer."
Also in the picture are top-seeded Caroline Wozniacki, hoping for her first Grand Slam title, and 2004 Wimbledon champion Maria Sharapova.
The top four men -- Nadal, No. 2 Novak Djokovic, No. 3 Federer and No. 4 Andy Murray -- have lost a total of three sets so far.
Federer will play No. 18 Mikhail Youzhny, and Djokovic will take on No. 19 Michael Llodra. Murray will meet No. 17 Richard Gasquet, while the last U.S. man in the field, No. 10 Mardy Fish, will play Tomas Berdych.