Ferrer qualified as the sixth seed for the year-ending Tennis Masters Cup. To begin, Ferrer upset third seed Djokovic in his first round-robin match, and then defeated second seed Rafael Nadal. He sealed his qualification for the knock-out stage by defeating eighth seed Richard Gasquet. He was the only man to have a perfect record in the round-robin stage and had the best win/loss set record (6–1). Ferrer next defeated fifth seed Andy Roddick in the semifinals. In the final, Ferrer lost to top seed Roger Federer. He ended the year with a career-high ranking of world no. 5.