Williams wins into second week while Serbs split at Wimbledon

London - Five-time Wimbledon winner Venus Williams defeated Spain's Carla Suarez Navarro 6-0, 6-4 Saturday to reach the fourth round as the pair met for the second time in 2009 on the Grand Slam stage. Third seed Williams, playing at the All England club for the 13th time, backed up her Australian Open victory of six months ago against the 20-year-old experiencing the Centre Court for the first time. Williams was joined in the second week by former French Open holder Ana Ivanovic, as the 13th seed ended the run of Australian Sam Stosur 7-5, 6-2. American Melanie Oudin, ranked 124, produced the shock of the women's draw when she stunned former number one and sixth seed Jelena Jankovic 6-7 (8-10), 7-5, 6-2. Jankovic came to the new Court 3 against the 17-year-old from Atlanta complaining of illness and was seen by the trainer during contest which stretched for almost three hours as she became the highest seed to exit so far. Qualifier Oudin's victory was her first in two starts as majors, losing in the first round at the Australian Open and failing to make the main draw in Paris. Williams and Ivanovic will next meet for the sixth time in their careers, with the American standing 5-1, her lone loss coming at the Melbourne quarter-finals last year. 'I'm very excited, she plays really well here, and last two years here she's been the champion,' said Serbia's former number one Ivanovic. 'Two years ago I played her in the semi-final, so I can take a lot from that match. I'm really happy to take that challenge and to play against a top player like her,' added the 13th seed. Ivanovic has been improving after saving a match point in the first round to survive. She only recently changed coaches, returning to the her adidas-sponsored mentors including longtime coach Sven Groeneveld and Darren Cahill. 'It's great to see the results, I just want to go out there and enjoy it, take it as a challenge. I haven't really played against too many high-ranked players lately because I wasn't putting myself in a position. 'But now, I see it as a great challenge.' In the men's third round, Czech Tomas Berdych swept Russian 12th seed Nikolay Davydenko 6-2, 6-3, 6-2. Igor Andreev completed a match left hanging by darkness at 5-5 in the fourth set, ending with a winning tiebreaker over Italy's Andreas Seppi 6-1, 7-6 (7-5), 4-6, 7-6 (7-5).