Through 2010 Australian Open 8-0: Lleyton Hewitt , Andy Roddick . 5-0: Nikolay Davydenko . 4-0: Tomas Berdych , Fernando Gonzalez , Nicolas Kiefer , Fabrice Santoro , Robin Soderling . 4-1: Mario Ancic , Novak Djokovic , Marat Safin . 3-0: Marcos Baghdatis , Jonas Bjorkman , James Blake , Michael Chang , Tommy Robredo . 3-1: Andre Agassi , Juan Martin del Potro , Juan Carlos Ferrero , Tommy Haas …