Stadium: Court 5 Round: 62 Ground: Clay
| ITF Argentina F8 | 2017/11/05 12:00 | Farfan, Lucas v Sierra, Fernando | 2-6,6-2,7-5 |
| ITF Argentina F7 | 2017/09/09 17:30 | Sierra, Fernando v Gabriel P Tumasonis | 4-6,7-5,3-6 |
| ITF Argentina F4 | 2017/08/20 14:30 | Sierra, Fernando v Florez, Valentin | 0-6,2-6 |
| ITF Argentina F3 | 2017/06/17 12:00 | Sierra, Fernando v Ignacio Monzon | 7-5,5-7,1-6 |
| ITF Argentina F1 | 2017/06/03 11:30 | Sierra, Fernando v Derdoy, Felipe | 4-6,3-6 |
| ITF Uruguay F2 | 2016/12/05 15:05 | Sierra, Fernando v Camilo Ugo Carabelli | 2-6,1-6 |
| ITF Uruguay F2 Qual | 2016/12/04 17:05 | Sierra, Fernando v Guerrero, Jeff | 6-4,2-6,6-0 |
| ITF Argentina F13 | 2016/11/05 17:30 | Genaro Alberto Olivieri v Sierra, Fernando | 6-0,7-6 |
| ITF Argentina F6 | 2017/09/02 12:00 | Severino, Carlos Eduardo v Reche, Tomas | 4-6,6-3,6-1 |
| ITF Argentina F4 | 2017/08/21 12:00 | Reche, Tomas v Fermin Tenti | 6-7,6-4,1-6 |
| ITF Argentina F4 | 2017/08/20 14:30 | Guido Ivan Justo v Reche, Tomas | 4-6,3-6 |
| ITF Colombia F3 Qual | 2017/07/29 15:00 | Reche, Tomas v Santamaria, Felipe | 6-3,1-6,0-6 |
| ITF Colombia F2 | 2017/07/22 14:00 | Reche, Tomas v Force, Charles | 0-6,4-6 |
| ITF Colombia F1 | 2017/07/17 15:00 | Reche, Tomas v Juan Bautista Otegui | 4-6,6-1,2-6 |
| ITF Argentina F3 | 2017/06/17 14:30 | Arreche, Nicolas Alberto v Reche, Tomas | 4-6,7-5,6-2 |
| ITF Argentina F2 | 2017/06/12 13:00 | Reche, Tomas v Espin Busleiman, Geronimo | 4-6,2-6 |