Rafael Nadal, of Spain, reacts against Fernando Gonzalez, of Chile, during the gold medal match in the singles tennis competition at the Beijing 2008 Olympics in Beijing, Sunday, Aug. 17, 2008. (AP Photo/Elise Amendola)
Top-ranked Rafael Nadal has advanced to the third round at the Australian Open, beating Roko Karanusic of Croatia in straight sets.
Nadal, who overtook Roger Federer for the No. 1 ranking last
August, beat Karanusic 6-2, 6-3, 6-2 in the center-court match
Thursday at Rod Laver Arena.
The 22-year-old Spaniard beat Federer in the French Open and
Wimbledon finals last year and is the Swiss star's biggest threat
to winning a record-equaling 14th Grand Slam singles title.
Nadal has a 3-0 record against Tommy Haas, his third-round