Quote Originally Posted by JazMerkin View Post
Mosley's defeat to Vernon Forrest. Shane looked unbeatable prior to this.

If you're talking about formality fights where someone played spoiler, then Jimmy Young, Carlos Baldomir & Zahir Raheem have all done this to George Foreman, Zab Judah & Erik Morales respectively.
Kind of but only when they did it twice, I guess Forrest could count against Shane, but I'm not sure he was that big an underdog in the second fight at least.

A hypothetical example might be Lennox Lewis losing to Rahman again in the rematch, or Wlad being knocked out again by Lamon Brewster.

Pavlik Hopkins is a good example of the unbeaten heir elect losing to the supposedly retirement bound former champ.