Best single win in every weight class

Heavyweight: Muhammad Ali over George Foreman
Cruiserweight: Oleksandr Usyk over Mairis Briedis
Light Heavyweight: Ezzard Charles over Moore in their third fight
Super Middleweight: Roy Jones over James Toney
Middleweight: Ezzard Charles over Charley Burley
Super Welterweight: Michael Nunn's KO1 of Sumbu Kalambay
Welterweight: Roberto Duran's win over Sugar Ray Leonard
Super Lightwiehght: Barney Ross over Tony Canzoneri
Lightweight: Benny Leonard's KO of Freddie Welsh
Super Featherweight: Erik Morales over Manny Pacquiao
Featherweight: Willie Pep over Sandy Saddler
Super Bantamweight: Wilfredo Gomez over Lupe Pintor
Bantamweight: Fighting Harada over Eder Jofre
Super Flyweight: Gonzalez over Estrada or vice versa ?
Flyweight: Pancho Villa over Jimmy Wilde

Don't know anything about 108 or 105.

 

I'll have a ago.

Heavyweight = Frazier defeating Ali

Cruiserweight = Holyfield defeating Dwight Qawi or Usyk beating Breidis/Gassiev in the Super Six Tournament.

Light Heavyweight = There's quite a few candidates.

Tarver KOing RJJ
Charles defeating Moore in their 3rd fight
Tunny defeating Greb 1st fight

Super Middleweight = RJJ defeating Toney

Middleweight = I'll go with Turpin over Robinson because Robinson was 129-1.

But Leonard vs Hagler is also a good choice.

Jr Middleweight = Hearns KOing Duran

Welterweight = LaMotta giving Robinson his first defeat or Leonard defeating Hearns.

Jr Welterweight = Locche schooling Cervantes, Phillips upsetting Tszyu, Pryor defeating Arguello, Ross defeating Canoneri, alot of good candidates.

Lightweight = Ambers defeating Armstrong

Super Featherweight = Morales defeating Pacquiao?

Featherweight = Saddler defeating Pep

Super Bantamweight = Gomez defeating Zarate ?

Bantamweight = Harada defeating Jofre

Super Flyweight = Rungvisai giving Gonzalez his first loss.

Flyweight = Gonzalez defeating Canto


That's all I've got for now off the top of my head @Saintpat

 

Some that haven't been mentioned yet

Heavyweight- Schmeling KO 12 Louis
Cruiserweight- Haye TKO 7 Mormeck
Light Heavyweight- Spinks UD Qawi
Super Middleweight- Andre Ward UD Carl Froch
Middleweight- Taylor UD Bernard Hopkins
Light Middleweight- Trinidad TKO 11 Vargas or Benitez UD Roberto Duran
Welterweight- Zivic UD Armstrong
Super Welterweight- Dulio Loi UD Carlos Ortiz or Frankie Randall SD Chavez
Lightweight- De Jesus UD Roberto Duran
Super Featherweight- Mayweather TKO Corrales
Featherweight- Pacquaio TKO Barrera
Super Bantamweight- Morales SD Barrera or Junior Jones UD Barrera
Bantamweight- Montiel TKO Hozumi Hasegawa
Super Flyweight- Vic Darchinyan KO 9 Mijares
Flyweight- Daisuke Naito UD Pongsaklek Wonjongkam
Light Flyweight- Carbajal TKO 11 Jorge Acre
Minimumweight- Ricardo Lopez SD Alvarez

 

Heavy: Rahman ko Lewis
Cruiser: Usyk over Breidis
175: Tarver ko Jones
168: Calzaghe over Kessler
160: idk
154: Floyd over Canelo
147: Montreal
140: Chavez over Taylor
135 idk
130 Floyd over Corrales
126 maybe Pac over Barrera, but Chenko over GRJ was probably higher level
122 Rigo over Donaire

 

Man, I love these queries that make you think. OK, here are a few, but I'll be back later

Heavyweight - Joe Louis KO1 Max Schmeling - we were on the precipice of WW2 and Max - although a good guy - was Hitler's pawn. No single win better.

Middleweight - Harry Greb W15 Mickey Walker - Two of the best of their era going at and by all accounts a damn good fight

Lightweight - Roberto Duran KO12 Esteban DeJesus - the rubber match and on top of that, since their second fight DeJesus picked up the WBC title so this was for all the marbles and they turned in a great fight

Bantam - Carlos Zarate KO4 Alfonso Zamora - should have been for the unified title as both WBA and WBC champs duked it out to an explosive finish

Super Fly - Johnny Tapia W12 Danny Romero - Man, everyone was equally divided on the outcome of this fight with both holding portions of the title

 

HW: Frazier-Ali 1 or Ali-Foreman
CW: Holy-Qawi 2
LHW: Charles-Moore 3
SMW: Jones-Toney
MW: Greb-Walker
JMW: Tito-Vargas
WW: Armstrong-Ross or Robinson-Gavilan 2
jWW: Pryor-Arguello 2 or Chavez-Taylor 1
LW: Williams-Montgomery 2
jLW: Mayweather-Corrales or Arguello-Escalera 1
FW: Saddler-Pep 1 or Pep-Saddler 2
jFW: Fenech-Payakaroon or Gomez-Zarate
BW: Zarate-Zamora or Olivares-Rose
jBW: Tapia-Romero
fly: Villa-Wilde

 

I agree with probably the whole list. These were all epic historical wins that age like wine.

There's a few other candidates that deserve mentioning such as Usyk beating the younger Gassiev to become the first undisputed Cruiserweight champ in quite a while, but Qawi was better than Gassiev.

Floyd's master class domination of Canelo is hard to ignore, although Canelo wasn't as good back then as he is now. But it's impressive mostly because of Floyd's age and the fact he moved up way higher than his natural limit.

The upcoming Bivol vs Beterbieve winner will be a major historical clash, I anticipate.

 

HW: ali vs foreman

CW: holyfield vs qawi

LHW: charles vs moore (any of their three fights)

SMW: jones vs toney

MW: turpin vs robinson 1

SWW: hearns vs benitez

WW: armstrong vs ross

SLW: benitez vs cervantes (benitez being 17 is what pushed it to number for me)

LW: gans vs nelson

SFW: morales vs pacquiao

FW: saddler vs pep 1/2 or kilbane vs attel (couldn't decide on this one)

SBW: gomez vs zarate

BW: harada vs jofre

SFlyW: roman vs watanabe

FlyW: villa vs wild or park vs canto or naito vs wonjongkam 3 (i really can't decide)

JFlyW: chang vs zapata 2 or flores vs gushiken 2 or ioka vs yuh 1

MinW: lopez vs alvarez 2

 

Just adding that at HW… Schemling vs Louis 1 was a genius plan, that’s a fight to study and learn from - better win then FOTC for my 0.2$ for 160lbs I actually like (don’t know if it’s “the best”) Tiger vs Griffith (for filmed bouts) that’s a 147lber (151lbs) surrendering 9lbs to a guy who was going to go up and become LHW champ very soon, Tiger was a monster renowned for his strength, durability and no nonsense style, Griffith had brazen to spare.

 

I’ve always wondered how RITJ can be considered “The Greatest” win at HW, it comes up a bit, do you mean historically? Because really it was a green guy getting beat up with too many nerves, good marketing made it great, similar deal with Toney vs Jones… Toney was very obviously drained, is beating a weight drained guy who wasn’t there really better then every 168lber win? Maybe if we go by names only.