My nickname is Mano de Piedra, meaning Hand of Stone. I come from Chile and have defeated players like, Lleyton Hewitt, Andre Agassi, Andy Roddick and Pete Sampras. In January, I reached the Australian Open Singles final, becoming the first Chilean to have reached the quarter final round in all four Grand Slams, but I lost to Roger Federer. Who am I'

Answer to last week’s question: Peter Mukherjea