For Modern-Sized (200lbs+) Heavyweights... Fastest light-combinations: Ali Fastest powerpunch-combinations: Tyson
180 pounds - 200 pounds: Petterson, Haye 200 - 230: Ali, Tyson, Byrd, Holyfield - 230: Wlad, Lewis, Bowe, Vitali
fastest powerpunch combos : Corrie Sanders fastest single punch : Arnold Cream (?) best footspeed : IDK yet , possibly young Ali , possibly Charles , possibly some1 else . quickest upper body movement : Byrd
Out of champs... Some of the fastest handspeeds: Patterson, Ali, Tyson, Holmes (more so with 3-4 punches and below, not really in flurries), Haye, Fastest feet: Ali, Patterson & Tyson could close the distance very quickly, Slowest handspeed: Foreman, Liston, Bruno, Smith Slowest feet: Liston, Smith, Bruno,
Holmes & Haye, but no Holy? :huh Heavyweight Holy of '88-'93 could pull off some blisteringly combinations at least marginally faster than anything those two could do, in my humble opinion. Not to mention Holy's ridiculously fast counter-punching ability.
Holyfield deserves to be in there for combination punching, I guess. As far as far as throwing 1 to 4 punches though, I think Holmes and Haye are both faster.