Andy Roddick was considered to be the future of American tennis after Pete Sampras retired, and for a moment he lived up to that billing. He became the youngest American to become world number one and won his first grand slam title in the early stages of his career. Everyone thought he had a bright future ahead of him.
He certainly did not end up having a bad one, but it was not near what we hoped.
Here are the biggest disappointments of Roddick's career.