Round: 62 Ground: Clay
| ITF Dominican Rep F3 | 2016/12/11 14:00 | Victor Ouvrard v Gabriel P Tumasonis | 6-1,6-0 |
| ITF Dominican Republic F2 | 2016/12/03 17:00 | Jesus Francisco Felix v Gabriel P Tumasonis | 6-7,6-0,6-3 |
| ITF Dominican Republic F1 | 2016/12/01 17:50 | Gabriel P Tumasonis v Caio Silva | 0-6,0-6 |
| ITF Dominican Republic F1 | 2016/11/30 16:40 | Thales Turini v Gabriel P Tumasonis | 4-6,2-6 |
| ITF Dominican Republic F1 | 2016/11/26 14:00 | Gabriel P Tumasonis v Washi Gervais | 5-7,6-2,6-2 |
| Challenger Santos Qual | 2016/09/18 15:30 | Fabricio Neis v Gabriel P Tumasonis | 6-1,6-3 |
| Challenger Santos Qual | 2016/09/17 15:18 | Gabriel P Tumasonis v Felipe Galvao | 6-0,6-2 |
| ITF Brazil F4 Qual | 2016/07/17 12:00 | Osni Junior v Gabriel P Tumasonis | 6-3,6-2 |
| ITF Belgium F13 Qual | 2016/09/05 12:05 | Esteban Bruna v Robi Tholl | 6-1,6-3 |
| ITF Germany F7 | 2016/07/10 09:30 | Robi Tholl v Adrian Oetzbach | 3-6,1-6 |