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World No.3 Novak Djokovic hit five aces and won 72 percent of service points to beat Croatian Ivan Ljubicic 6-4, 6-4 in one hour in 45 minutes.
The 21 year-old Djokovic, reached the Madrid semi-finals in 2007 (l. to Nalbandian). He owns a 37-10 record this season, winning titles in Dubai (d. Ferrer) and Belgrade (d. Kubot). He also reached the finals in Miami (l. to Murray), Monte Carlo (l. to Nadal) and Rome (l.to Nadal).
The 30 year-old Ljubicic, currently at No.54 on the rankings, drops to 14-11 this season. He reached the Madrid final in 2005 (l. to Nadal in five sets).