Rafael Nadal= Best Sportsmanship Since Stefan Edberg. Agree or Disagree?

Having just gotten ed by Juan Martin Del Potro, he was very gracious in his post-match interview, giving credit to his opponent for his incredible play. Then, he went on to sign autographs for fans. Came across as a total winner despite the loss. Can't say the same for other prominent male players, who have lost big matches. Right?