Level of talent pool aside, had David Haye beat Wlad K. when they fought, that would have been similar to DC's win in UFC 226. He didn't though, and I'm wondering which boxer had a similar achievement. Closest thing I can think of was RJJ beating John Ruiz, but Ruiz wasn't the undisputed best of the HW division. Even if it weren't the LHW/CW/HW divisions, which were the boxers/matches that were similar in nature? Toney over Jirov?