World number one Roger Federer came from a set down to eliminate Argentine sixth seed David Nalbandian 5-7, 6-2, 6-2, advancing to Monte Carlo Masters semifinals on Friday.

The Swiss top seed will meet Novak Djokovic of Serbia, who beat him in this year's Australian Open semi-final.

The Serb breezed through with a 6-4 6-0 demolition of American Sam Querrey, who had beaten France's Richard Gasquet and former French Open champion Carlos Moya of Spain.

Federer is still on course for a repeat of the last two finals against second seed Rafael Nadal, who qualified with a 6-1, 7-5 victory over fellow Spaniard David Ferrer.

The three times champion will continue the defence of his title against Russian fourth seed Nikolay Davydenko, who beat compatriot Igor Andreev 6-3, 4-6, 7-5.

The results mean the top four seeds have reached the semi-finals, which are due to start at 1130 GMT on Saturday.

(Xinhua News Agency April 26, 2008)