Pac eats uppercuts for breakfast (see Cotto, Clottey, and Margarito). I never once thought it was gonna be a head shot that would take Pac out. However, Pac almost went down on 2 thundering body shots that Margarito fired perfectly. You could see Pac keeling over in pain, but his recovery was quick.
It was a good, clean uppercut, to say it would knock out a middleweight or Floyd is just daft. Pac has a decent chin, not an iron chin.
Margo barely landed any good shots. STFU Manny does have a good chin but this fight certainly didn't showcase it.
Pac smothers those uppercuts. It's not like the uppercut Pac landed on Cotto, or the uppercuts that Margo landed on Cotto, the positioning is very different. There is no follow through.
He flat out refuses to even consider Mayweather, He was getting busted up and caught with triple jabs from a slow weight drained brawler, what will a precision counter puncher do to him?