For some reason I can't picture a Novak-Rafa final, but I'm having an even harder time trying to work out who's going to stop it. With only half the second round played, looking at the remaining players who have reached a Wimbledon quarter final before, you have a group of veterans who have never laid a glove on Novak or Rafa when it really counted, or in some cases ever (Isner, Gasquet, Bautista Agut, Goffin), then you have Shapovalov who is 0-7 against Novak, and...Kyrgios.
As for the women, if ever the likes of Kerber, Halep or Kvitova fancied grabbing another slam they may not get a better chance.