For overall speed...reflexes,handspeed,footspeed,speed on powershots...I say Roy Jones takes it comfortably,if not easily..At his best,the man was a pure dynamo...Could do thingz in the ring that...up until then..just were notphysically plausble...he had it all. Too bad he never went to the hill with it.This one cat,I would bet on to beat Sugar Ray Robinson..He was that good.
hard question i know ....some boxers have quicker punches ,eg-howard winston,some have lightning reactions eg- jones jr.some fast around the ring eg-naseem hamed. but if your son looked up and asked you the question what would your first reaction answer be?
Not sure about entire body of speed but I think Roy Jones takes the handspeed honours & Muhammad Ali the footspeed (primes.)