Ok. Ferrer is no Nadal, Federer, or Djokovic, but he OWNs a lot of the players that are idolised on this forum. Del Potro is one of them. Check out their WTF match last year (2012).
Ferrer is the real deal, the guy is a stud. I don't know why this is in the former player section. He's still number 4 in the world.
Disclaimer: I'm NOT a coach...
Real tennis: https://www.youtube.com/watch?v=yDqnkLJ9BtM