Maria Sharapova clinched the Qatar Open on Sunday with a 6-1 2-6 6-0 victory over her fellow Russian Vera Zvonareva to maintain her 100 per cent record in 2008.

The 20-year-old won the Australian Open last month without dropping a set and followed it by claiming her 18th career title in Doha.

The fourth seed avenged her loss to Zvonareva at Indian Wells last year and came out all guns blazing, losing the first set before taking the next six in a row in just 23 minutes.

The world number five then struggled, however, allowing Zvonareva to clinch the second set at the fifth opportunity.

It was only the second set Sharapova has dropped this year, the first being against Galina Voskoboeva in the second round of this tournament.

It was far from a polished performance from Sharapova but she produced powerful groundstrokes when it mattered to break Zvonareva three times in succession in the third set and served out to seal the win.