Nadal, who also won the award two years ago, crowned a remarkable season by winning three Grand Slam titles and reclaiming the world No 1 ranking. In triumphing at the US Open he became only the seventh man in history to win all four Grand Slam titles.

Sebastian Fest, co-president of ITWA, said: “Rafael Nadal and Kim Clijsters have had great years on the court, but they have also been superb ambassadors for their sport. Having followed them throughout the season, we appreciate how professional and helpful they have both been in answering the thousands of questions that journalists have put to them. Their attitude is a great example to everyone in professional sport.”