Re: Is Rafael Nadal Parera an underachiever?
Nope. He has not underachieved at all. By 26, Federer had 12 slams, Borg had 11 slams and Sampras had 10 slams.
The top 4 player that has underachieved is Djokovic by far and to a lesser extent Andy Murray losing his first 4 slam finals. Djokovic was AWOL from AO 2008 to AO 2011. Wasted too much time.