I led off with these two examples because offense..forward attacking was nearly the sum total of their repetoire.
Ike Williams, when inclined. His stoppages on film are as impressive as anyone's, be it all-out head-hunting savagery or a more measured breakdown of the body.
And actually I think Rodrigo Valdez would have a place on a list like this. Again, when inclined, he was absolutely vicious but placed his punches very well. The only problem with him is that he was a bit of a head hunter when he had a man hurt, unlike Ike Williams who would crack the ribs if he couldn't get to the head.
Hearns is definitely up there. What he did to Cuevas and Duran among others was nothing short of frightening. EDIT: Of course he wasn't a offensive boxer in the way of (young) Duran, Frazier, Chavez, Tyson etc, but when he went on the offensive he was most often devastating.
It seems to me that the greatest offensive boxer in the history of modern boxing was Harry Greb. Consider the following: 1. He's the first man to hand defeats to Tunney (and the only) and Tommy Gibbons, both of whom are among the greatest LHWs ever. Greb was totally outgunned and outsized. 2. By all accounts, the man's punch stats would be off the charts. 3. This was the era of 5 ounce gloves. Greb was taking shots from guys far bigger than him as a matter of course. He didn't care about size, power, color --nothing. 4. Most of his greatest victories occured when he was blind or practically blind in one eye. 5. You don't beat Mickey Walker unless you are a serious offensive machine. 6. This year marks an anniversary. Greb had 45 fights in 1919. That's an average of a fight every 8 days. You name the style, he faced it that year. Middleweights, light heavyweights, and heavyweights. And guess what... no one beat him. 45-0 that year. Floyd, Ray Leonard had less fights in their total career than Greb had in one year. Greb had 300 fights when he was done -67 practically blind. And he kicked the crap out of a prime Dempsey -who others have mentioned out here as a top offensive fighter. .... Armstrong? Greb was his daddy. Robinson? compared to Greb, he's conquests were limited... Ray was Carthage to Greb's Rome. No one else that I can think of is even close. And that's not all, Greb was defensively surreal -but that's another thread. This content is protected [SIZE=-2][/SIZE][SIZE=-2] [/SIZE][SIZE=-2][/SIZE][SIZE=-2][/SIZE]
Tommy Hearns could be devistating at times. Tyson jumped to mind straight away. Roy Jones when he let his hands go at 160/168 had brutal power and amongst the fastest fighters ever. Duran for ability to fight anywhere is great.