MELBOURNE — A welcome wind blew away the stifling heat at Melbourne Park Friday but there was no diverting Novak Djokovic or Maria Sharapova from their paths to the last 16 of the Australian Open on day five of the tournament. Djokovic remained on course for his third straight title as he marched into the fourth round without giving up a set after successfully negotiating a tricky tie against Radek Stepanek with a 6-4, 6-3, 7-5 win. Sharapova was even more impressive and, although denied a third successive 6-0, 6-0 win of the week, looked every inch the title contender in her 6-1, 6-3 demolition of seven-times grand slam champion Venus Williams. Fourth seed Agnieszka Radwanska also continued her red-hot start to the year, notching up win number 12 with a 6-3, 6-1 victory over Britain's Heather Watson in their third round tie. Playing with the roof closed on Rod Laver Arena because of a few drops of rain that accompanied the cooler weather, Djokovic had to work for every point against Stepanek, who charged the net 67 times. It was little more than a good workout for the world No. 1, however, and before launching a broadside at disgraced cyclist Lance Armstrong, he complimented the 34-year-old Czech on his contribution to the match. “He loves the big stage,” the Serbian said. Sharapova's flurry of fist pumps after she wound up her match against Williams showed how much the victory meant to the second seed, who has been in ruthless form this week despite missing her one warm-up tournament with a collar-bone injury. The absence of the injured world No. 4 Rafa Nadal has left a gaping hole in the top half of the draw and fourth seed David Ferrer eased further into it with a 6-4, 6-2, 6-3 win over another entertainer, 2006 finalist Marcos Baghdatis. The Spanish baseliner showed more than a few decent touches of his own — most notably a sumptuous backhand lob — as he set up a fourth-round contest against Japan's Kei Nishikori. Big-serving Tomas Berdych was a 6-3, 6-2, 6-2 winner over Jurgen Melzer and will face Kevin Anderson in the next round with a likely quarterfinal meeting with Djokovic on the line. “Kevin Anderson has a huge serve so it could be like playing against myself,” the Czech fifth seed said of the South African, who upset 22nd seed Fernando Verdasco 4-6, 6-3, 4-6, 7-6, 6-2. Djokovic must first get past Swiss Stanislas Wawrinka, who ended the 2013 challenge of the American men at Melbourne Park when he beat Sam Querrey 7-6, 7-5, 6-4. Eighth seed Janko Tipsarevic outlasted Frenchman Julien Benneteau 3-6, 6-4, 2-6, 6-4, 6-3 in a second successive five-set match but Melbourne's changeable weather seemed to trouble him as much as the length of his contests. The Serbian will next face Spanish 10th seed Nicolas Almagro, who ended Jerzy Janowicz's maiden Australian Open with a 7-6, 7-6, 6-1 win in a match that was free of the histrionics that accompanied the Pole's second round victory. The 13th seed Ana Ivanovic won the battle of the Serbian former world number ones against Jelena Jankovic 7-5, 6-3 and was later joined in the fourth round by another former French Open champion Li Na of China who beat Sorana Cirstea 6-4, 6-1. American teenager Madison Keys was knocked out by German fifth seed Angelique Kerber in the opening match on Rod Laver Arena. — Reuters
