I understand, but the equipment makes a HUGE difference. So you have the actual players, but they are using completely different equipment. So, since we are comparing players, it's just not reasonable to have one use wood frames while the other uses modern frames if we are using a hypo in which we take Nadal back to 1980. These kinds of questions will always be discussed. In 2020-2030, do you really think folks won't wonder how Borg, Sampras, Nadal, Federer, Laver, etc. would do against the top players of the time? Of course they will. I for one will argue that Federer and company could hold their own most likely. Who knows what equipment changes and other changes will take place by then though. If there are big changes from now until then, we'll wonder how they would do versus the top players of now would do against them. If folks say that "Nadal would get bageled", it would be mistaken in my opinion.