Originally Posted by NEW_BORN
Nadal's 3 consecutive slams on 3 different surfaces in one calendar year trumps Laver's calendar slams imo.
The accomplishment is diluted due to the homogenized surfaces. Laver won the GS pre-homogenization, and while he didn't win one on hard, he did on clay and grass which have the largest margin of difference.
As far as achievements in tennis go, Borg's three consecutive pre-homogenized channel slams is pretty much the bossest imo.