These two are both very underrated (should appear in everyone's all-time top ten list, and yet they are both often forgotten in 'mainstream' greatest lists).
Nevertheless I think some posters on this forum overcompensate by ranking them a bit too highly, i.e. suggesting they are legitimate contenders for GOAT.
- Pancho never won a clay major. He strikes me as a Sampras equivalent but playing in a weaker era (for the record, I consider the old pro majors with their small fields to be below the modern Grand Slams; and as for head-to-head tours between top players, they can be misleading: if the game had been contested in such a way over the past decade, we would conclude that Nadal is greater than Federer. They are not, IMHO, the best indicator of who is the top player).
- Rosewall had a psychological problem at Wimbledon: he went 0-5 in finals there in amateur, pro and Open play.
I rank Rosewall No 6 and Gonzales No 7 all-time.
Sloane Stephens and Laura Robson: future WTA world No 1 and 2.