Leaving Real Madrid the biggest mistake of my career: Nistelrooy

Former Dutch forward Ruud van Nistelrooy revealed that his decision to leave Real Madrid was the "biggest mistake" of his career. "I wanted to go to the World Cup in 2010, so I decided to go to Hamburg. I made that decision too quickly," he said. Nistelrooy added that he left because Real signed Karim Benzema, Kaka and Cristiano Ronaldo.