Originally Posted by NadalAgassi
Somewhere from 8-15 all time. Most likely just outside the top 10 all time at 11th or 12th. Open Era alone I would rank him 6th behind Nadal, Borg, Lendl, Kuerten, Wilander in that order. There is no argument whatsoever for him being higher than 6th in the Open Era, but one could argue him being lower than Muster or Courier, and thus arguably lower than 6th.
While I agree with this overall, no way would I rank Muster ahead of Fed at this point, 5 FO finals compared to getting past QF twice and one final is just too much of a gap IMO even if we presume Muster's peak level on clay was better than Fed's (which is something I personally think).
Courier is a different matter, I think he's underrated as a claycourter, one could certainly argue he should be ranked higher than Fed on clay.