World Number One Caroline Wozniacki struggled before dispatching a tricky opponent, Argentine Gisela Dulko to advance to the second round of the Australian Open, the season's first Grand Slam tournament, being played here in Melbourne, Australia.

Click here to enjoy the interesting moments of the match.

Wozniacki made a fine start to the match and broke Dulko's serve in the sixth game to serve out the first set 6-3. The Dane looked in complete control of the match when she clinched another break to lead the Argentine star 3-1. However, Dulko brought her fine net play to the fore and picked up quick points to break Wozniacki back in the eighth game and level the score at 4-4. Wozniacki then raised the level of her game to first get a decisive break and then fnish the match with a 6-3, 6-4 scoreline in one hour and 41 minutes of play.

In the day's first match, Russian superstar and 2008 champion Maria Sharapova posted a clinical 6-1, 6-3 win over Thai veteran Tamarine Tanasugarn to become the first payer to enter the second round of the Australian Open.

Other winners of the day included French Open champion Francesca Schiavone, Brisbane winner Kaia Kanepi, Julia Goerges, Monica Niculescu, Alberta Brianti and Evgeniya Rodina, who all registered contrasting victories over their respective opponents to move ahead in the draw.