"I think Roddick has had an incredible career so far. I think he's an over-achiever. He won the US Open in 2003, reached No 1 in the world and has also won the Davis Cup. These are things some players only dream of, so I get a little disturbed whenever it is suggested that he's under-achieving and choking. People need to look at the guys he's faced throughout his career," -- Jim Courier, defending his compatriots in Dubai this week.