Giovannini made his professional boxing debut at the age of 23 in 1984 losing in a decision. He conquered the Argentinean light-heavyweight title in his 17th fight and continued campaigning at the light-heavyweight division until 1990. That year, he lost by TKO against Jeff Harding for the WBC light-heavyweight world title.
He then moved up to fight at cruiserweight where he got the chance to fight Markus Bott for the WBO cruiserweight world title, which he won by split decision in Hamburg, Germany. He would defend the title once, in a rematch with Bott by unanimous decision. On December 1994, he fought against Dariusz Michalczewski, losing by KO in the 10th round and dropping his WBO title. He would continue fighting scarcely until 2000 without much success.
Result | Record | Opponent | Type | Round, time | Date | Location | Notes |
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{{no2}}Loss | 38-10-4 | {{flagicon|USA}} Ezra Sellers | TKO}} | 1 (10)}} | 2000-01-29}} | {{flagicon|USA}} {{small|Ballys Park Place Hotel Casino, Atlantic City}} | |
{{yes2}}Win | 38-9-4 | {{flagicon|ARG}} Luis Nelson González | RTD}} | 4 (10)}} | 1999-09-10}} | {{flagicon|ARG}} {{small|Club Atletico Central Argentino, Rio Cuarto}} | |
{{no2}}Loss | 37-9-4 | {{flagicon|ARG}} Darío Walter Matteoni | PTS}} | 12 (12)}} | 1997-02-15}} | {{flagicon|ARG}} {{small|Mar del Plata}} | {{small|For vacant Argentina cruiserweight title}} |
{{draw}}Draw | 37-8-4 | {{flagicon|ARG}} Sergio Daniel Merani | PTS}} | 12 (12)}} | 1996-10-05}} | {{flagicon|ARG}} {{small|Estadio F.A.B., Buenos Aires}} | {{small|For vacant Argentina cruiserweight title}} |
{{yes2}}Win | 37-8-3 | {{flagicon|BRA}} Luis Delmiro Alves | UD}} | 10 (10)}} | 1995-04-15}} | {{flagicon|ARG}} {{small|Buenos Aires}} | |
{{no2}}Loss | 36-8-3 | {{flagicon|POL}} Dariusz Michalczewski | KO}} | 10 (12)}} | 1994-12-17}} | {{flagicon|GER}} {{small|Sporthalle, Alsterdorf}} | {{small|Lost WBO World cruiserweight title}} |
{{yes2}}Win | 36-7-3 | {{flagicon|USA}} Larry Carlisle | TKO}} | 6 (12)}} | 1994-10-02}} | {{flagicon|ARG}} {{small|Buenos Aires}} | |
{{yes2}}Win | 35-7-3 | {{flagicon|ARG}} José Arnaldo Balbuena | KO}} | 6 (10)}} | 1994-09-02}} | {{flagicon|ARG}} {{small|Venado Tuerto}} | |
{{yes2}}Win | 34-7-3 | {{flagicon|ARG}} Miguel Ángel Antonio Aguirre | PTS}} | 10 (10)}} | 1994-05-06}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 33-7-3 | {{flagicon|BRA}} Eduardo Luiz Dos Santos | KO}} | 5 (10)}} | 1994-04-07}} | {{flagicon|ARG}} {{small|Sunchales}} | |
{{yes2}}Win | 32-7-3 | {{flagicon|GER}} Markus Bott | UD}} | 12 (12)}} | 1993-11-20}} | {{flagicon|GER}} {{small|Sporthalle, Alsterdorf}} | {{small|Retained WBO World cruiserweight title}} |
{{yes2}}Win | 31-7-3 | {{flagicon|GER}} Markus Bott | SD}} | 12 (12)}} | 1993-06-26}} | {{flagicon|GER}} {{small|Sporthalle, Alsterdorf}} | {{small|Won WBO World cruiserweight title}} |
{{no2}}Loss | 30-7-3 | {{flagicon|ARG}} Andres Anselmi | TKO}} | 1 (8)}} | 1993-03-27}} | {{flagicon|ARG}} {{small|Villa Sarmiento}} | |
{{yes2}}Win | 30-6-3 | {{flagicon|ARG}} Marcelo Domínguez | DQ}} | 4 (12)}} | 1993-02-20}} | {{flagicon|ARG}} {{small|Estadio F.A.B., Buenos Aires}} | {{small|For vacant Argentina Cruiserweight Title}} |
{{no2}}Loss | 29-6-3 | {{flagicon|ARG}} Oscar Alfredo Gonzalez | KO}} | 5 (10)}} | 1991-11-22}} | {{flagicon|ARG}} {{small|Freyre}} | |
{{yes2}}Win | 29-5-3 | {{flagicon|ARG}} Miguel Angel Robledo | PTS}} | 12 (12)}} | 1991-08-09}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{draw}}Draw | 28-5-3 | {{flagicon|ARG}} Jorge Juan Salgado | PTS}} | 12 (12)}} | 1990-05-10}} | {{flagicon|ARG}} {{small|Villa Insuperable}} | {{small|For vacant Argentina Light Heavyweight Title}} |
{{no2}}Loss | 28-5-2 | {{flagicon|AUS}} Jeff Harding | TKO}} | 11 (12)}} | 1990-03-18}} | {{flagicon|USA}} {{small|Resorts International, Atlantic City}} | {{small|For WBC World Light Heavyweight Title}} |
{{yes2}}Win | 28-4-2 | {{flagicon|ARG}} Victor Robledo | RTD}} | 2 (10)}} | 1989-12-02}} | {{flagicon|ARG}} {{small|Estadio Luna Park, Buenos Aires}} | |
{{yes2}}Win | 27-4-2 | {{flagicon|AUS}} Jeff Harding | UD}} | 10 (10)}} | 1989-05-10}} | {{flagicon|AUS}} {{small|Newcastle Basketball Stadium, Newcastle}} | |
{{no2}}Loss | 26-4-2 | {{flagicon|ARG}} Victor Robledo | PTS}} | 10 (10)}} | 1989-03-17}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 26-3-2 | {{flagicon|ZAI}} Mabobo Kamunga | PTS}} | 8 (8)}} | 1988-11-29}} | {{flagicon|ITA}} {{small|San Pellegrino Terme}} | |
{{yes2}}Win | 25-3-2 | {{flagicon|ZAI}} Mwehu Beya | MD}} | 12 (12)}} | 1988-09-14}} | {{flagicon|ITA}} {{small|Scheggia}} | {{small|For WBC International Light Heavyweight Title}} |
{{yes2}}Win | 24-3-2 | {{flagicon|ITA}} Noe Cruciani | KO}} | 1 (12)}} | 1988-03-30}} | {{flagicon|ITA}} {{small|Spoleto}} | {{small|For WBC International Light Heavyweight Title}} |
{{no2}}Loss | 23-3-2 | {{flagicon|ARG}} Jorge Juan Salgado | PTS}} | 12 (12)}} | 1987-12-12}} | {{flagicon|ARG}} {{small|Ushuaia}} | {{small|For Argentina Light Heavyweight Title}} |
{{yes2}}Win | 23-2-2 | {{flagicon|ARG}} Eduardo Domingo Contreras | PTS}} | 10 (10)}} | 1987-11-13}} | {{flagicon|ARG}} {{small|Rosario}} | |
{{yes2}}Win | 22-2-2 | {{flagicon|ARG}} Nestor Albarracin | KO}} | 4 (10)}} | 1987-10-09}} | {{flagicon|ARG}} {{small|Ceres}} | |
{{yes2}}Win | 21-2-2 | {{flagicon|ARG}} Angel Antonio Caro | TKO}} | 3 (10)}} | 1987-09-25}} | {{flagicon|ARG}} {{small|Resistencia}} | |
{{yes2}}Win | 20-2-2 | {{flagicon|ARG}} Angel Antonio Caro | PTS}} | 10 (10)}} | 1987-08-21}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 19-2-2 | {{flagicon|ARG}} Miguel Angel Maldonado | RTD}} | 7 (10)}} | 1987-07-17}} | {{flagicon|ARG}} {{small|Tandil}} | |
{{yes2}}Win | 18-2-2 | {{flagicon|ARG}} Miguel Angel Steimbach | PTS}} | 10 (10)}} | 1987-06-09}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 17-2-2 | {{flagicon|ARG}} Eduardo Domingo Contreras | PTS}} | 12 (12)}} | 1987-03-13}} | {{flagicon|ARG}} {{small|Rafaela}} | {{small|For Argentina Light Heavyweight Title}} |
{{draw}}Draw | 16-2-2 | {{flagicon|BRA}} Clarismundo Aparecido Silva | PTS}} | 10 (10)}} | 1987-02-06}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 16-2-1 | {{flagicon|ARG}} Jorge Juan Salgado | PTS}} | 12 (12)}} | 1986-12-12}} | {{flagicon|ARG}} {{small|Rafaela}} | {{small|For South American Light Heavyweight Title}} |
{{yes2}}Win | 15-2-1 | {{flagicon|ARG}} Anibal Adan Romero | PTS}} | 10 (10)}} | 1986-11-13}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 14-2-1 | {{flagicon|ARG}} Jorge Juan Salgado | TKO}} | 11 (12)}} | 1986-08-23}} | {{flagicon|ARG}} {{small|Estadio Luna Park, Buenos Aires}} | {{small|For Argentina Light Heavyweight Title}} |
{{yes2}}Win | 13-2-1 | {{flagicon|BRA}} Pedro Ferraro | KO}} | 8 (10)}} | 1986-07-04}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 12-2-1 | {{flagicon|CHI}} Miguel Cea | RTD}} | 7 (10)}} | 1986-04-11}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 11-2-1 | {{flagicon|ARG}} Juan Carlos Fernandez | PTS}} | 12 (12)}} | 1985-12-20}} | {{flagicon|ARG}} {{small|Rafaela}} | {{small|For vacant Santa Fe Light Heavyweight Title}} |
{{yes2}}Win | 10-2-1 | {{flagicon|ARG}} Juan Carlos Rodriguez | PTS}} | 10 (10)}} | 1985-11-21}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{draw}}Draw | 9-2-1 | {{flagicon|ARG}} Sergio Daniel Merani | PTS}} | 8 (8)}} | 1985-10-05}} | {{flagicon|ARG}} {{small|Estadio Luna Park, Buenos Aires}} | |
{{yes2}}Win | 9-2 | {{flagicon|ARG}} Victor Robledo | PTS}} | 10 (10)}} | 1985-09-13}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 8-2 | {{flagicon|ARG}} Anibal Adan Romero | PTS}} | 10 (10)}} | 1985-08-23}} | {{flagicon|ARG}} {{small|San Vicente}} | |
{{yes2}}Win | 7-2 | {{flagicon|ARG}} Juan Jose Leiva | RTD}} | 7 (10)}} | 1985-07-25}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{no2}}Loss | 6-2 | {{flagicon|ARG}} Mario Oscar Melo | TKO}} | 5 (10)}} | 1985-05-18}} | {{flagicon|ARG}} {{small|Estadio Luna Park, Buenos Aires}} | |
{{yes2}}Win | 6-1 | {{flagicon|ARG}} Anibal Adan Romero | UD}} | 10 (10)}} | 1985-04-11}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 5-1 | {{flagicon|ARG}} Daniel Eduardo Guibaudo | KO}} | 5 (10)}} | 1985-03-22}} | {{flagicon|ARG}} {{small|Rafaela}} | |
{{yes2}}Win | 4-1 | {{flagicon|ARG}} Miguel Antonio Mosna | PTS}} | 8 (8)}} | 1984-12-08}} | {{flagicon|ARG}} {{small|Estadio Luna Park, Buenos Aires}} | |
{{yes2}}Win | 3-1 | {{flagicon|ARG}} Mario Oscar Melo | PTS}} | 6 (6)}} | 1984-11-03}} | {{flagicon|ARG}} {{small|Estadio Luna Park, Buenos Aires}} | |
{{yes2}}Win | 2-1 | {{flagicon|ARG}} Anibal Adan Romero | PTS}} | 6 (6)}} | 1984-10-06}} | {{flagicon|ARG}} {{small|Estadio Luna Park, Buenos Aires}} | |
{{yes2}}Win | 1-1 | {{flagicon|ARG}} Miguel Antonio Mosna | PTS}} | 6 (6)}} | 1984-08-25}} | {{flagicon|ARG}} {{small|Estadio Luna Park, Buenos Aires}} | |
{{no2}}Loss | 0-1 | {{flagicon|ARG}} Mario Oscar Melo | PTS}} | 6 (6)}} | 1984-07-06}} | {{flagicon|ARG}} {{small|Morteros}} | |