You sure you weren't thinking of Raonic?
Isner is in Ferrer's 1/8 and Murray's 1/4 of the draw; was always extremely unlikely he'd get all the way to the Semis and then beat Nadal.
Raonic on the other hand faces Monaco in R3, and the winner takes on Nadal (or Schwank) in R4.
No, you'd be amazed the blagging up some parts of the American press does. "Extremely unlikely" didn't come into it, lol.