Underachiever. Nadal has talent to win 20 slams. In fact his mental strength is quite overrated. He has choked away quite a few slams in his career
Only 2 really - had real chances to win Wimby 07 and Aus Open 12. Wimby 11 was a disaster from the start - never seemed there so that was more a disgrace to let Novak win a slam on grass but other than that don't think he necessarily choked when it came to many slam losses. Could have been at 13/14 at best by now. Then again, he also could have lost Aus Open 09 and Wimby 08 so it all balances out in the end...
As for the thread, it's a bit of a joke. 11 slams - count them.