Unbeatable yet unknown fighters ?

Does 1919 Harry Greb, who went 45-0 with no knockdowns suffered fit what you're asking for?

With Montreal Duran, the case has been made that the younger 26 year old version who won the rubber match with DeJesus was actually superior.

 

Oh yeah- There's Tokyo Tyson, but he's a bum...

There's Tokyo Douglas... Now that was some fighter!

FOTC Frazier

 

The Joe Louis of Max Baer Vintage !
Tommy Hearns of Roberto Duran
Willie Pep-pre planecrash

 

Definitely '67. He wasn't fighting professionally in '69.

 

Yes, he was. He got paid for stepping in the ring with Marciano, didn't he?

 

Valentines day massacre robinson was supposed to be a good scrapper

 

Jung Koo Chang

 

Zarate Gomez might be a candidate. Wilfredo incredibly and stupidly underestimated Sanchez. For Zarate though, he was locked and loaded, dealing with an opponent possessing an incredible knockout record. At the time, one major boxing publication described Gomez in an analysis of all the champions and top contenders as having "No known weaknesses" the first time I'd ever seen an active competitor evaluated this way. (In the same issue, which was prior to Montreal, Duran was said to be "his own worst enemy" but "may be invincible when in prime condition" I believe this statement about his invincibility in peak form may have been accurate, and I still think he would have unified the WW Title by stopping Hearns late if he went after Tommy following Montreal. There is no chance he would have taken Hearns lightly immediately after what happened to Cuevas, and Tommy wasn't ready for El Cholo in 1980. SRL showed in 1981 that Hearns didn't take it to the body well, something Hagler further punctuated in 1985.)

 

Bubi Scholz. Lost two times, rumour had it he had to lose the first one to Humez in a non title-match to get a shot at his European title. Of course he won the rematch. And he beat himself by not doing enough against Harold Johnson for the lhw crown when beeing past prime. Still did well for starting out as a lw.

 

Robby openly admitted though that he was counting on Jake's issues with making weight to weaken him. If LaMotta had somehow managed to do Ray Leonard's thing, opening his training camp weighing under the limit of the division he was competing in, then that would have been a compellingly different situation.

Now, I'm not suggesting Jake could have won. He actually managed to get out to an early lead precisely because he was weight weakened, due to having only the energy to jab away, something different from how he previously dealt with Robinson in the ring. But in top condition, he'd surely be a more formidable obstacle who Ray could not count on fading down the stretch.

Jake gave Robby hell over 12 rounds in their previous bout, over five years earlier. SRR admitted that fight V, not the St. Valentine's Day Massacre, was the toughest fight he ever had with LaMotta. The only time Jake ever came in under 155 was for Tony Janiro in 1947, and it was an excellent performance, not a depleted one. Jake was hell on wheels in 1946, and a case can be made that Robinson and LaMotta never had a peak for peak showdown. As frequently as they fought, the fact is that they did not square off between September 1945 and February 1951. It's generally accepted that this is when Robinson peaked, and Jake was two months younger. One of the overlooked losses to boxing history.

 

You are thinking of Mythical Ali nicknamed "without the enforced break". Different fighters altogether.