World No. 1 Novak Djokovic continued his domination over Kevin Anderson, rolling over the South African 6-2, 6-3 in the third round of the ATP-WTA Indian Wells tournament Monday. Top seed Djokovic has now beaten Anderson four straight times, including three matches in 2011. After winning the Australian Open, defending champion Djokovic is now 12-1 for the season in his third tournament. He will be hard-pressed to match his performance of last year when he had one of the best seasons in the history of the sport, but he is showing no signs of slowing down either. “I think I served well and put a lot of pressure on him and returned really, really good,” Djokovic said. “So I'm really happy with this win today. It wasn't easy.” The 24-year-old Serb advances to the fourth round, where he will play Spaniard Pablo Andujar, who beat countryman Albert Ramos 7-6 (7-5), 6-4. Djokovic had five aces, was a perfect three-for-three on break points saved and won 67 percent of his first-serve points in the 97-minute match. Australian qualifier Matthew Ebden surprised Mardy Fish, beating the eighth-seeded American 6-3, 6-4 to advance to the fourth round. The 24-year-old Ebden said the win over the US No. 1 was the biggest win of his career. “Especially in America, to beat the top player here is, it's an incredible feeling,” Ebden said. “Very big win. I'm pleased with my progress.” Ebden took his chance at 4-4 in the second set when the umpire called a hindrance penalty against Fish, who had called out a “Come on” before the ball was dead. Fish lost his cool with the umpire and Ebden ended up breaking serve to go ahead 5-4. He served out for the match, winning all four points in the final game. “It was right under the umpire's nose, so it was pretty clear what happened. I think umpire made the right call. Unfortunately he did say ‘Come on' before I hit the ball,” Ebden, who missed the shot, said. “I did get there in reasonable time to hit the ball. I still had a decent play on it.” The Durban, South African-born Ebden, who now lives in Perth, Australia, is ranked 91st in the world and came into the tournament with a modest 4-5 record. Ebden will next face another American, John Isner, who beat Juan Monaco of Argentina 7-5, 7-5. In other men's matches, Frenchman Gilles Simon beat Swiss Stanislas Wawrinka 6-4, 6-4 and seventh-seeded Czech Tomas Berdych unleashed seven aces on the way to a 6-3, 4-6, 6-2 victory over American Andy Roddick. It was a mixed day for the Aussies. Playing for the first time since their epic three-hour, 16-minute match at the US Open last year, Nadia Petrova outlasted Australia's Samantha Stosur in another three-set marathon. This time, Petrova won on the third match point but she needed two hours, 46 minutes to defeat sixth-seeded Stosur 6-1, 6-7 (6-8), 7-6 (7-5). In other third round matches Monday, second seed Maria Sharapova defeated Romania's Simona Halep 6-3, 6-4 and defending champ Caroline Wozniacki outlasted unseeded Sofia Arvidsson of Sweden 3-6, 7-5, 6-2 in the night match. France's Marion Bartoli beat Chanelle Scheepers of South Africa 6-2, 6-0 and Lucie Safarova advanced when Italy's Francesca Schiavone retired from their match after the first set with a virus. Schiavone was behind 6-2 when she pulled out. In other matches, Maria Kirilenko beat Spaniard Lourdes Dominguez Lino 6-2, 4-6, 6-4 and Italy's Roberta Vinci won 6-7, 6-0, 6-4 over Slovakian Dominika Cibulkova.