Meanwhile, 15th seed Aravane Rezai recovered from a mid-match blip to see off Angelique Kerber 6-2 2-6 6-3.

BBC: Svetlana Kuznetsova scrapes through at French Open

Peng will next play the Czech Republic's Iveta Benesova, who beat Rezai's fellow Frenchwoman Mathilde Johansson 6-3 2-6 6-4.

CNN: No. 1 Wozniacki wins Melbourne opener

Belgian ace Henin crashed out to Aravane Rezai, losing eight straight games to fall to a 4-6 7-5 6-0 defeat.

CNN: Sharapova and Henin crash out in Madrid

The other candidates are a former head of Iran's powerful Revolutionary Guards, Mohsen Rezai, and Mehdi Karroubi who was a speaker of parliament and is considered a reformist.

BBC: Iran candidate Mousavi backs women's rights

Dr Ali Rezai, the neurosurgeon at Cleveland Clinic's Center for Neurological Restoration who carried out the procedure said the changes in the man had been "remarkable and sustained".

BBC: The electrodes were placed at specific points in the brain

At the Rice Research Institute in Gilan, I met Mr Rezai, an irrigation engineer who believes it is essential to look at the wider picture if the rice farmers are to sustain production.

BBC: Iran drought hits rice farmers