Djokovic knocks out Ljubicic

In another match, Novak Djokovic took on tournament wildcard Ivan Ljubicic. The world number four struggled to find his rhythm in the early games, but regained his momentum to take the match, 6-4, 6-4 in one hour and 45 minutes.

Novak Djokovic from Serbia returns the ball to Ivan Ljubicic from  Croatia during the Madrid Open Tennis in the Caja Magica, Madrid,  Friday May 15, 2009.(AP Photo/Daniel Ochoa de Olza)

Mauresmo comes from behind to beat Szavay

On the women's side, Amelie Mauresmo lost the first set against Agnes Szavay of Hungary. But the Frenchwoman broke her opponent twice to claim the second, and dominated the third to take a 5-7, 6-1, 6-1 win.

French Amelie Mauresmo celebrates winning a point against  Hungarian Agnes Szavay during their quarterfinal match of the  ATP Madrid Masters claycourt tournament. Mauresmo won 5-7, 6-1,  6-1.(AFP/Pedro Armestre)