Samantha Stosur has delivered another claycourt clinic to surge into the third round of the French Open with a straight-sets demolition of American Irina Falconi.

Stosur needed a mere 63 minutes to put Falconi to the sword at the Roland Garros “Bull Ring”, powering into the last 32 for the fourth successive year with a 6-1 6-4 mauling.

Australia’s 2010 runner-up has dropped just nine games in four sets this campaign, but is sure to face a much sterner test of her title credentials in a likely showdown on Friday with Russian rival Nadia Petrova.

Petrova, the 27th seed who was to face South African Chanelle Scheepers later on Wednesday, boasts a 5-2 lead over Stosur in their career series.

Their past two clashes have been epics, both going the distance with Stosur triumphing in a midnight thriller at last year’s US Open and Petrova gaining revenge at Indian Wells two months ago.

Falconi offered Stosur no such resistance.

The US Open champion was on her game from the get-go, unleashing two monster forehands to break Falconi in the second game before holding to love for 3-0.

She grabbed a double break to roar ahead 5-0 and the first set was as good as over, Stosur eventually claiming it after 25 minutes with a wide-angled ace.

On cruise control, Stosur crunched another forehand winner to snare the only break of the second set in the fifth game and completed the comprehensive victory after barely an hour.