Straight sets wins for Clijsters, Mauresmo, Schnyder

Amelie Mauresmo, Kim Clijsters and Patty Schnyder all secured straight-sets wins in the fourth round of the Australian Open in Melbourne.

Both Mauresmo and Schnyder had little trouble dispatching their opponents on the way to a quarter-final berth, while Clijsters had to overcome a tough challenge from Italian Francesca Schiavone.