Mayweather is not number 1 again after beating a great small lightweight at welterweight friend.

You are probably gonna mention how Pacquiao weighed around the 147 mark for his fights with Marquez but the difference was Marquez was fighting at a weight he was comfortable at, where his speed was at his best, where at welterweight his handspeed was clearly diminished.

A win over Pacquiao would give him back his spot as number 1.