IF Marquez DOES catch Floyd flush, does he have the power to KO PBF?

no he wouldn't be knocked unless he totally left himself open which I really never see Floyd do ne ways!

 

Marquez has the "Punch" to do it.
We will see when Floyd bends over to avoid the overhand right
How he deals with an uppercut.

 

mayweather's chin is good, not iron but not glass.i dont think jmm will stop him with one punch.and i dont think pbf will run from his little ass either.its good fight because pbf is not a big ww and it reminds of the tuff mexicans he fought back in the day.im going to enjoy some good tactical fighting and dont be surprised if they fight in the pocket.i want to see pbf in the pocket, i dont think he will use his legs much in this fight.naw i see close pocket fight.should be a good one.