Looking at players who spent their entire career in the open-era I think it would be fair to say there is an elite group of 7 players that rises above the rest. These players are (in no particular order): Sampras, Borg, Agassi, Federer, McEnroe, Lendl, Connors. There is then IMO a small but detectable drop to the next players. Leading this 2nd tier group are Becker, Wilander and Edberg. Who is the best player in this 2nd group and who left the greatest legacy?