Can Tomas Berdych trouble Roger Federer ?

Well since Berdych beat Federer in Athens he hasn't been much trouble to Federer; however, given Federer's current form, I think anything can happen. Federer had two easy opponents and having a worthy opponent all of a sudden might catch him by surprise. But I think he gets by Berdych and will eventually reach the gold medal round. He only has Blake and potentially Gonzalez left in his side of the draw.