| Year | date | Winner | sets | Finalist | set 1 | set 2 | set 3 |
| ATP World Tour 250 Series |
| 2019 Men Buenos Aires ARG | 17.02 | Marco Cecchinato |  ITA | 318 | 2-0 | Diego Schwartzman |  ARG | 419 | 6-1 | 6-2 | |
| 2018 Men Buenos Aires ARG | 18.02 | Dominic Thiem |  AUT | 1 | 2-0 | Aljaz Bedene |  SLO | | 6-2 | 6-4 | |
| 2017 Men Buenos Aires ARG | 19.02 | Alexandr Dolgopolov |  UKR | | 2-0 | Kei Nishikori |  JPN | 1 | 7-64 | 6-4 | |
| 2016 Men Buenos Aires ARG | --.02 | Dominic Thiem | AUT | 5 | 2-1 | Nicolas Almagro |  ESP | | 7-62 | 3-6 | 7-64 |
| 2015 Men Buenos Aires ARG | --.02 | Rafael Nadal | ESP | 1 | 2-0 | Juan Monaco |  ARG | | 6-4 | 6-1 | |
| 2014 Men Buenos Aires ARG | --.02 | David Ferrer | ESP | 1 WC | 2-0 | Fabio Fognini |  ITA | 2 | 6-4 | 6-3 | |
| 2013 Men Buenos Aires ARG | --.02 | David Ferrer | ESP | 1 | 2-1 | Stan Wawrinka |  SUI | 3 | 6-4 | 3-6 | 6-1 |
| 2012 Men Buenos Aires ARG | --.02 | David Ferrer | ESP | 1 | 2-1 | Nicolas Almagro | ESP | 2 | 4-6 | 6-3 | 6-2 |
| 2011 Men Buenos Aires ARG | --.02 | Nicolas Almagro | ESP | 1 | 2-1 | Juan Ignacio Chela | ARG | 8 | 6-3 | 3-6 | 6-4 |
| 2010 Men Buenos Aires ARG | --.02 | Juan Carlos Ferrero | ESP | 2 | 2-1 | David Ferrer | ESP | 1 | 5-7 | 6-4 | 6-3 |
| 2009 Men Buenos Aires ARG | --.02 | Tommy Robredo | ESP | 3 | 2-1 | Juan Monaco | ARG | | 7-5 | 2-6 | 7-65 |
| ATP International Series |
| 2008 Men Buenos Aires ARG | --.02 | David Nalbandian | ARG | 1 | 2-1 | Jose Acasuso | ARG | | 3-6 | 7-65 | 6-4 |
| 2007 Men Buenos Aires ARG | --.02 | Juan Monaco | ARG | | 2-0 | Alessio Di Mauro | ITA | | 6-1 | 6-2 | |
| 2006 Men Buenos Aires ARG | --.02 | Carlos Moya | ESP | 5 | 2-0 | Filippo Volandri | ITA | 6 | 7-66 | 6-4 | |
| 2005 Men Buenos Aires ARG | --.02 | Gaston Gaudio | ARG | 2 | 2-0 | Mariano Puerta | ARG | WC | 6-4 | 6-4 | |
| 2004 Men Buenos Aires ARG | --.02 | Guillermo Coria | ARG | 1 | 2-0 | Carlos Moya | ESP | 2 | 6-4 | 6-1 | |
| 2003 Men Buenos Aires ARG | --.02 | Carlos Moya | ESP | 1 | 2-1 | Guillermo Coria | ARG | 8 | 6-3 | 4-6 | 6-4 |
| 2002 Men Buenos Aires ARG | --.02 | Nicolas Massu |  CHI | SE | 2-1 | Agustin Calleri | ARG | | 2-6 | 7-65 | 6-2 |
| 2001 Men Buenos Aires ARG | --.02 | Gustavo Kuerten |  BRA | 1 | 2-0 | Jose Acasuso | ARG | Q | 6-1 | 6-3 | |
| 1996-2000 Buenos Aires Challenger |
| ATP World Series |
| 1995 Men Buenos Aires ARG | --.02 | Carlos Moya | ESP | | 2-0 | Felix Mantilla | ESP | Q | 6-0 | 6-3 | |
| 1994 Men Buenos Aires ARG | --.02 | Alex Corretja | ESP | 3 | 2-1 | Javier Frana | ARG | | 6-3 | 5-7 | 7-6 |
| 1993 Men Buenos Aires ARG | --.02 | Carlos Costa | ESP | 2 | 2-1 | Alberto Berasategui | ESP | 6 | 3-6 | 6-1 | 6-4 |
| 1989-1992 Not held |
| 1988 Men Buenos Aires ARG | --.02 | Javier Sanchez | ESP | 7 | 2-0 | Guillermo Perez-Roldan | ARG | 1 | 6-2 | 6-4 | |
| 1987 Men Buenos Aires ARG | --.02 | Guillermo Perez-Roldan | ARG | 2 | ret. | Jay Berger |  USA | 5 | 3-2 | 3-2 | |
| 1986 Men Buenos Aires ARG | --.02 | Jay Berger | USA | | 2-0 | Franco Davin | ARG | WC | 6-3 | 6-3 | |
| 1985 Men Buenos Aires ARG | --.02 | Martin Jaite | ARG | 3 | 2-0 | Diego Perez |  URU | 1 | 6-4 | 6-2 | |
| 1983-1984 Not held |
| 1982 Men Buenos Aires ARG | --.02 | Guillermo | Vilas | ARG | 1 | 2-0 | Alejandro Ganzabal | ARG | | 6-2 | 6-4 | |
| 1981 Men Buenos Aires ARG | --.02 | Ivan Lendl |  TCH | 1 | 2-0 | Guillermo Vilas | ARG | 2 | 6-1 | 6-2 | |
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