A couple of stats for greatness and I suppose for GOAThood for Connors and Lendl. Both won over 140 tournaments (Connors 148 and Lendl 146 I believe). This is a record for the Open Era. Both had many years of dominance in which they won over 90% of their matches. They both had five year periods in which they averaged winning 90% of their matches. This is super tough when you consider Sampras and Agassi has never done it.