87
Wins
3
Losses
9
Draws
59
KOs
68%
KO %
- Born
- 1942
- Died
- 1995
- Nationality
- Argentina
- Career
- 1963–1977
Unbeaten over his final 81 fights, Monzón retired as undisputed middleweight champion.
Titles & Honours
- Undisputed World Middleweight Champion (1970–1977)
- 14 successful defenses
Career Timeline
1963–1977- Milestone
First recorded professional bout
vs Ramón Montenegro · W KO
- Milestone
25th recorded win
vs Carlos Alberto Salinas · PTS. Newspaper decisions excluded.
- Milestone
50th recorded win
vs Benito Sanchez · KO. Newspaper decisions excluded.
- Title history
Title reign begins
Undisputed World Middleweight Champion (1970–1977). Year from profile title history; exact title-winning bout not identified.
- Signature fight
vs Nino Benvenuti
W KO12 Nino Benvenuti (1970) · PalaEur, Rome, Lazio, Italy
- Signature fight
vs Emile Griffith
W PTS15 Emile Griffith (1971, 1973) · Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina
- Signature fight
vs Emile Griffith
W PTS15 Emile Griffith (1971, 1973) · Stade Louis II, Fontvieille, Monte Carlo, Monaco
- Milestone
Latest recorded bout
vs Rodrigo Valdez · W UD. Not necessarily the retirement date.
- Signature fight
vs Rodrigo Valdez
W PTS15 Rodrigo Valdez (1977) · Stade Louis II, Fontvieille, Monte Carlo, Monaco
Derived from the current archive and profile honours. Title-reign years are not exact bout dates; title claims are not independently verified. Signature fights use existing profile selections, or clearly labelled wins over other archived fighters when no selections exist. Year-only dates retain their original precision.
Photo Archive
3 archival photographs under their original licences.
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Fight-by-Fight Record
| Date | Result | Opponent | Method | Round | Venue |
|---|---|---|---|---|---|
| 1963-02-06 | W | Ramón Montenegro | KO | 2 | Club Sportivo Ben Hur, Rafaela, Santa Fe, Argentina |
| 1963-03-13 | NC | Albino Veron | NC | 1 | Vila, Santa Fe, Argentina |
| 1963-04-09 | W | Albino Veron | TKO | 2 | Santa Fe, Santa Fe, Argentina |
| 1963-04-12 | W | Mario Suarez | TKO | 8 | Posadas, Misiones, Argentina |
| 1963-05-03 | W | Raul Elio Rivas | KO | 5 | Posadas, Misiones, Argentina |
| 1963-05-31 | W | Jose N Rodriguez | KO | 5 | Paraná, Entre Ríos, Argentina |
| 1963-07-17 | W | Andres Cejas | KO | 4 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1963-08-09 | W | Lisandro Guzmán | KO | 3 | Córdoba, Córdoba, Argentina |
| 1963-08-28 | L | Antonio Aguilar | PTS | 10 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1963-10-18 | W | Benito Sanchez | KO | 8 | Reconquista, Santa Fe, Argentina |
| 1963-12-06 | W | Rene Sosa | KO | 6 | Paraná, Entre Ríos, Argentina |
| 1964-01-17 | W | Roberto Eduardo Carabajal | KO | 8 | Paraná, Entre Ríos, Argentina |
| 1964-06-13 | W | Angel Alberto Coria | PTS | 8 | Mar del Plata, Buenos Aires, Argentina |
| 1964-06-28 | L | Felipe Cambeiro | PTS | 8 | Auditorium Río TV, Rio de Janeiro, Rio de Janeiro, Brazil |
| 1964-07-10 | W | Roberto Eduardo Carabajal | PTS | 10 | Tostado, Santa Fe, Argentina |
| 1964-07-24 | W | Walter Villa | KO | 9 | Ceres, Santa Fe, Argentina |
| 1964-08-14 | W | Juan Carlos Diaz | KO | 9 | Villa Ángela, Chaco, Argentina |
| 1964-09-04 | W | Americo Vacca | KO | 3 | Paraná, Entre Ríos, Argentina |
| 1964-09-25 | W | Francisco Olea | KO | 9 | Tostado, Santa Fe, Argentina |
| 1964-10-09 | L | Alberto Massi | UD | 10 | Cordoba Sport Club, Córdoba, Córdoba, Argentina |
| 1964-10-28 | W | Francisco Gilabert | RTD | 4 | Buenos Aires, Distrito Federal, Argentina |
| 1964-11-18 | D | Celedonio Lima | PTS | 10 | Buenos Aires, Distrito Federal, Argentina |
| 1965-01-08 | D | Andres Antonio Selpa | PTS | 10 | Mar del Plata, Buenos Aires, Argentina |
| 1965-03-11 | W | Andres Antonio Selpa | PTS | 10 | Santa Fe, Santa Fe, Argentina |
| 1965-04-09 | D | Emilio Ale Ali | PTS | 10 | San Miguel, Tucumán, Argentina |
| 1965-05-19 | W | Anibal Cordoba | PTS | 10 | Buenos Aires, Distrito Federal, Argentina |
| 1965-07-14 | W | Alberto Retondo | TKO | 8 | Buenos Aires, Distrito Federal, Argentina |
| 1965-08-01 | W | Felipe Cambeiro | PTS | 8 | São Paulo, São Paulo, Brazil |
| 1965-08-14 | D | Manoel Severino | PTS | 8 | Rio de Janeiro, Rio de Janeiro, Brazil |
| 1965-08-28 | D | Manoel Severino | PTS | 8 | Rio de Janeiro, Rio de Janeiro, Brazil |
| 1965-10-06 | W | Gregorio Gomez | PTS | 10 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1965-11-17 | W | Celedonio Lima | KO | 5 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1965-12-08 | W | Antonio Aguilar | PTS | 10 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1965-12-29 | W | Carlos Alberto Salinas | PTS | 10 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1966-02-04 | W | Ramon D Rocha | PTS | 10 | Santa Fe, Santa Fe, Argentina |
| 1966-02-17 | W | Norberto Juncos | KO | 7 | Santa Fe, Santa Fe, Argentina |
| 1966-04-29 | W | Ismael Hamze | TKO | 9 | San Nicolas, Santiago del Estero, Argentina |
| 1966-06-03 | D | Ubaldo Marcos Bustos | PTS | 10 | Río Gallegos, Santa Cruz, Argentina |
| 1966-07-08 | W | Benito Sanchez | KO | 4 | San Pereyra, Argentina |
| 1966-09-03 | W | Jorge Fernandez | UD | 12 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1966-11-01 | W | Angel Alberto Coria | PTS | 10 | Mar del Plata, Buenos Aires, Argentina |
| 1966-11-18 | W | Luis Antonio Pereyra | TKO | 2 | Santa Fe, Santa Fe, Argentina |
| 1966-12-02 | W | Alberto Massi | TKO | 8 | Santa Fe, Santa Fe, Argentina |
| 1966-12-23 | W | Marcelo Farias | KO | 3 | San Cristóbal, Santa Fe, Argentina |
| 1967-01-13 | W | Carlos Alberto Salinas | KO | 8 | Santa Fe, Santa Fe, Argentina |
| 1967-01-27 | W | Eudoro Robledo | KO | 4 | Charata, Chaco, Argentina |
| 1967-02-15 | W | Alberto Massi | PTS | 10 | San Francisco, Santa Fe, Argentina |
| 1967-03-09 | W | Osvaldo Marino | KO | 7 | Santa Fe, Santa Fe, Argentina |
| 1967-03-25 | W | Angel Alberto Coria | KO | 6 | Mar del Plata, Buenos Aires, Argentina |
| 1967-04-09 | W | Benito Sanchez | TKO | 3 | Santa Elena, Entre Ríos, Argentina |
| 1967-05-06 | D | Bennie Briscoe | PTS | 12 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1967-06-10 | W | Jorge Fernandez | UD | 12 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1967-07-29 | W | Antonio Aguilar | KO | 9 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1967-08-16 | W | Tito Marshall | PTS | 10 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1967-09-08 | W | Ramon D Rocha | PTS | 10 | Rosario, Santa Fe, Argentina |
| 1967-10-06 | W | Carlos Estrada | KO | 7 | Trelew, Chubut, Argentina |
| 1967-10-20 | W | Ramon D Rocha | KO | 7 | San Juan, La Rioja, Argentina |
| 1967-11-18 | W | Tito Marshall | PTS | 10 | Buenos Aires, Distrito Federal, Argentina |
| 1968-04-05 | D | Juan Aguilar | PTS | 10 | Mendoza, Mendoza, Argentina |
| 1968-05-17 | W | Alberto Massi | PTS | 10 | Córdoba, Córdoba, Argentina |
| 1968-06-20 | W | Juan Aguilar | PTS | 10 | Buenos Aires, Distrito Federal, Argentina |
| 1968-07-05 | W | Benito Sanchez | KO | 4 | Chaco, Chaco, Argentina |
| 1968-08-14 | W | Doug Huntley | KO | 4 | Buenos Aires, Distrito Federal, Argentina |
| 1968-10-23 | W | Charley Austin | UD | 10 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1968-12-07 | W | Johnny Brooks | PTS | 10 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1968-12-20 | W | Emilio Ale Ali | PTS | 10 | Mendoza, Mendoza, Argentina |
| 1969-01-10 | W | Ruben Orrico | KO | 9 | Santa Fe, Santa Fe, Argentina |
| 1969-03-14 | W | Mario Taborda | KO | 3 | Club Sportivo, Presidencia Roque Saenz Pena, Chaco, Argentina |
| 1969-04-25 | D | Carlos Alberto Salinas | PTS | 10 | Recreativo Bochas Club, Paraná, Entre Ríos, Argentina |
| 1969-06-06 | W | Carlos Alberto Salinas | TKO | 7 | Paraná, Entre Ríos, Argentina |
| 1969-07-05 | W | Harold Richardson | KO | 3 | Buenos Aires, Distrito Federal, Argentina |
| 1969-08-09 | W | Tom Bethea | PTS | 10 | Buenos Aires, Distrito Federal, Argentina |
| 1969-09-05 | W | Emilio Ale Ali | TKO | 7 | San Miguel, Tucumán, Argentina |
| 1969-09-27 | W | Manoel Severino | KO | 6 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1969-12-12 | W | Carlos Estrada | KO | 2 | Santa Fe, Santa Fe, Argentina |
| 1970-02-11 | W | Antonio Aguilar | KO | 5 | Mar del Plata, Buenos Aires, Argentina |
| 1970-03-07 | W | Juan Aguilar | RTD | 9 | Santa Fe, Santa Fe, Argentina |
| 1970-04-18 | W | Adolfo Jorge Cardozo | TKO | 3 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1970-07-18 | W | Eddie Pace | PTS | 10 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1970-09-19 | W | Santiago Rosa | KO | 4 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1970-11-07 | W | Nino Benvenuti | TKO | 12 | PalaEur, Rome, Lazio, Italy |
| 1970-12-19 | W | Charley Austin | KO | 2 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1971-02-19 | W | Domingo Guerrero | KO | 2 | Salta, Salta, Argentina |
| 1971-03-06 | W | Roy Lee | KO | 2 | Santa Fe, Santa Fe, Argentina |
| 1971-05-08 | W | Nino Benvenuti | TKO | 3 | Stade Louis II, Fontvieille, Monte Carlo, Monaco |
| 1971-09-25 | W | Emile Griffith | TKO | 14 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1971-12-04 | W | Fraser Scott | TKO | 3 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1972-03-04 | W | Denny Moyer | TKO | 5 | Palazzetto dello Sport, Rome, Lazio, Italy |
| 1972-06-17 | W | Jean-Claude Bouttier | TKO | 13 | Colombes Stadium, Paris, Île-de-France, France |
| 1972-08-19 | W | Tom Bogs | TKO | 5 | Idrætspark, Copenhagen, Denmark |
| 1972-11-11 | W | Bennie Briscoe | UD | 15 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1973-05-05 | W | Roy Dale | KO | 5 | Palazzetto dello Sport, Rome, Lazio, Italy |
| 1973-06-02 | W | Emile Griffith | UD | 15 | Stade Louis II, Fontvieille, Monte Carlo, Monaco |
| 1973-09-29 | W | Jean-Claude Bouttier | UD | 15 | Stade Roland Garros, Paris, Île-de-France, France |
| 1974-02-09 | W | José Nápoles | RTD | 7 | Puteaux, Hauts-de-Seine, France |
| 1974-10-05 | W | Tony Mundine | KO | 7 | Estadio Luna Park, Buenos Aires, Distrito Federal, Argentina |
| 1975-06-30 | W | Tony Licata | TKO | 10 | Madison Square Garden, New York, New York, U.S. |
| 1975-12-13 | W | Gratien Tonna | KO | 5 | Nouvelle Hippodrome, Paris, Île-de-France, France |
| 1976-06-26 | W | Rodrigo Valdez | UD | 15 | Stade Louis II, Fontvieille, Monte Carlo, Monaco |
| 1977-07-30 | W | Rodrigo Valdez | UD | 15 | Stade Louis II, Fontvieille, Monte Carlo, Monaco |
Showing 100 of 100 recorded fights · last updated 2026-10-11. Imported record tables are not independently verified and may be incomplete. Early-era logs include newspaper decisions (NWS), which are not counted in the official totals above.
Record notes
Fight record last retrieved: 2026-10-11. Title histories remain subject to archival review.
Historical-era totals differ between record-keeping conventions (newspaper decisions, exhibitions).
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