Cotto and Pac are shot to hell so I don’t rate either as much of an upset. I give Ali more credit though, at least he indisputably won his fight, and with his fists no less.
Horn was just a case of nationality trumps stardom, like Bradley vs Pac 1. Saddam actually took the fight.
Both are not upsets really, like Pac shoulnd't even be at 147lb and Cotto shoulnd't be in the 154lb-160lb mix neither. RG losing as well to me is not an upset, as he was moving up in weight classes.