Chavez wins either a clear decision, or possibly a late TKO, but I'll give Nelson the benefit of the doubt and say he lasts the distance. There's tiers of greats, and Nelson, though he was a great fighter, was a tier below a Chavez, Arguello, Floyd, Pac. Nelson was more on the tier of a Barrera, or Morales, though to be fair, I think Nelson was a much better fighter than MAB/Morales.
