Stadium: Court 10 Round: 25 Ground: Clay
| ITF M15 Buenos Aires | 2019/07/10 14:15 | Juan Ignacio Galarza v Oscar Gabriel Ortiz | 6-1,6-1 |
| ITF M25 Buenos Aires | 2019/07/01 12:00 | Thiago Cigarran v Oscar Gabriel Ortiz | 5-7,6-4,10-5 |
| ITF M15 Curitiba | 2019/06/26 13:00 | Mateus Alves v Oscar Gabriel Ortiz | 7-6,6-3 |
| ITF M15 Curitiba | 2019/06/25 14:35 | Oscar Gabriel Ortiz v Joao Giannella | 6-3,6-0 |
| ITF M15 Sao JDR Preto | 2019/06/19 14:50 | Andre Miele v Oscar Gabriel Ortiz | 7-5,6-3 |
| ITF M15 Sao JDR Preto | 2019/06/18 12:30 | Joao Hinsching v Oscar Gabriel Ortiz | 6-4,6-4 |
| ITF M15 Buenos Aires | 2019/05/08 17:25 | Gonzalo Villanueva v Oscar Gabriel Ortiz | 6-2,6-3 |
| ITF M15 Buenos Aires | 2019/05/06 17:15 | Maximiliano Estevez v Oscar Gabriel Ortiz | 7-5,3-6,10-4 |