This is interesting...
Mcenroe has a 20-14 lead over Jimmy Connors, exactly how Sampras held a 20-14 lead over Agassi. It's interesting because Mcenroe and Sampras both had really great SV games while Connors and Agassi had great return games...and look at the outcomes in both cases.
http://www.atptennis.com/5/en/player...layernum2=M047