Australian Open 19th seed Nadia Petrova, who demolished Kim Clijsters in the third round, took out 3rd seed Svetlana Kuznetsova today, 6-3, 3-6, 6-1. Both players made a lot of unforced errors, and Kuznetsova struggled with her second serve. There was reason to believe the third set would be close, but Petrova lifted her game and all but ran away with it.
I thought the "old Nadia" would be back last year, but she started the season with an illness, and then proceeded to have ups and downs. There is no denying Petrova's talent, but she has often had a problem with mental toughness. But so far in Melbourne, it has been her opponents who have had a problem.