Hall of Fame
Each of those sets would still require Nadal to break him six times each. I don't care how good Nadal is on clay; he is not winning over 50% of return points against the Sampras serve, even with the difference in equipment. Even on clay, the serve is the most important shot in tennis. And we're not talking about some 4.0-level serve. This is Pete Sampras of all people, and no matter how below-par he is, you can't expect to win a match if he serves every game. That is the equivalent of triple-bageling him twice in a normal match, which is really tricky to do against that serve. Here are Sampras's stats on clay:It's basically asking if the scoreline of a regular match would be 62 62 62 or worse. If you go with the conditions that Sampras has tech from his own era and Nadal from his, I think it's quite likely that Sampras doesn't win over 50% of serve points on Chatrier.
Service Games won% - 81.5%
SVC. GMs. Lost per set - 0.91
SVC GMs Lost per match - 2.5
Sampras would only have to win 60% of his service games (which is abysmal by his standards) to win the match.
This is an impossible challenge. And think about Sampras's second serve. You know, the famous second serve. Think about how many risks he would take with that weapon since he knows he's going to serve every game.