Australian Open: Fourth Round Report

The favorites on the men's side to win the title moved on relatively easily in the fourth round. Top seed Roger Federer made it into his 23rd consecutive Grand Slam quarterfinals after blanking Lleyton Hewitt in straight sets. Defending champion Rafael Nadal lost a set, but was able to break the big serve of Ivo Karlovic three times to win. In the meantime, 2008 champion Novak Djokovic took advantage of his cakewalk draw while Andy Murray has not lost a single set yet.

The other matches went the distance. Marin Cilic defeated US Open champion Juan Martin Del Potro 6-3 in the fifth set. Andy Roddick posted similar results against former finalist Fernando Gonzalez as the American had to win it 6-2 in the fifth. Another former finalist, Jo-Wilfried Tsonga, and 6th seed Nikolay Davydenko were both up 2 sets to love before losing the next two sets to their respective opponents. Both had to dig deep to win in the fifth set. It was Tsonga's first five-set match.

Both Williams sisters move through, Serena Williams having an easier time than her older sister. Serena also has not dropped her serve so far this tournament. US Open finalist Caroline Wozniacki, former world no. 1 Dinara Safina, and two-time Grand Slam winner Svetlana Kuznetsova were defeated this round with Safina retiring due to a back injury.

The Justine Henin comeback train rolls on as she defeats fellow Belgian Yanina Wickmayer. She will now have to fend off Nadia Petrova who dismantled Kim Clijsters two rounds ago.