Stadium: Court 11 Round: 44 Ground: Clay
| ITF M25 Lima | 2020/02/03 15:00 | Miljan Zekic v Leiva Biason, Oscar Mattias | 6-2,6-0 |
| ITF M25 Lima | 2020/02/02 18:00 | Leiva Biason, Oscar Mattias v Riquelme Coppari, Agustin | 6-2,2-6,10-6 |
| ITF M15 Cancun | 2019/12/08 14:00 | Leiva Biason, Oscar Mattias v Gonzalez, Javier (Chl) | 4-6,1-6 |
| ITF M15 Cancun | 2019/12/01 19:00 | Leiva Biason, Oscar Mattias v Benjamin, Jordan | 3-6,1-6 |
| ITF - M15 Santiago | 2019/09/30 14:00 | Besada, Santiago v Leiva Biason, Oscar Mattias | 6-4,6-4 |
| Buenos Aires, Singles Qualifying M-ITF-ARG-22A | 2019/09/15 17:00 | Mariano Navone v Leiva Biason, Oscar Mattias | 6-1,6-1 |
| ITF M25 Lima | 2019/07/15 15:00 | Daniel Antonio Nunez v Leiva Biason, Oscar Mattias | 6-4,6-3 |
| ITF M15 Lima | 2019/07/09 14:00 | Leiva Biason, Oscar Mattias v Agustin Maria Gascia | 4-6,3-6 |
| ITF M25 Lima | 2020/02/02 18:00 | Bautista Vilicich v Mendoza, Alejandro | 6-4,5-7,3-10 |
| Maldonado, Singles Qualifying M-ITF-URU-01A | 2019/11/28 13:00 | Bautista Vilicich v Hidalgo, Gabriel Alejandro | 4-6,3-6 |
| Maldonado, Singles Qualifying M-ITF-URU-01A | 2019/11/27 12:00 | Khotkov, Oleg v Bautista Vilicich | 6-7,4-6 |
| Maldonado, Singles Qualifying M-ITF-URU-01A | 2019/11/26 12:00 | Postay, Alan v Bautista Vilicich | 6-4,3-6,5-10 |
| Junin, Singles M-ITF-ARG-23A | 2019/10/23 12:00 | Bautista Vilicich v Juan Manuel Cerundolo | 3-6,1-6 |
| Junin, Singles M-ITF-ARG-23A | 2019/10/21 12:00 | Bautista Vilicich v Ezequiel Simonit | 6-3,2-6,10-5 |