Stadium: CENTRAL Round: 54 Ground: Clay
| ITF M15 Brasilia | 2021/11/01 12:00 | Sean Hess v Gabriel P Tumasonis | 1-6,6-4,8-10 |
| ITF M15 Sofia | 2023/07/05 06:00 | Sean Hess v Adam Heinonen | 7-5,5-7,5-7 |
| ITF M15 Sofia | 2023/07/03 13:30 | Sean Hess v Loris Pourroy | 6-1,2-6,10-7 |
| ITF M15 Sofia | 2023/07/03 08:00 | Sean Hess v Stephanos Schinas | 6-1,4-6,10-6 |
| ITF M15 Wroclaw | 2023/06/26 11:30 | Sean Hess v Aristotelis Thanos | 6-7,2-6 |
| ITF M15 Wroclaw | 2023/06/26 08:00 | Sean Hess v Breno R Urvaneja | 6-3,6-3 |
| ITF M15 Wroclaw | 2023/06/25 10:30 | Sean Hess v Egor Baklanov | 6-0,6-4 |
| ITF M15 Kursumlijska Banja | 2023/06/22 10:35 | Sean Hess v Lautaro Midon | 1-6,0-6 |
| ITF M15 Kursumlijska Banja | 2023/06/21 14:20 | Sean Hess v Vuk Radjenovic | 1-6,6-1,7-5 |
| ITF M25 Mosquera | 2023/03/20 18:40 | Arvid Nordquist v Gabriel P Tumasonis | 6-3,6-4 |
| ITF M25 Anapoima | 2023/03/12 15:00 | Joel Angel Lucero v Gabriel P Tumasonis | 6-1,6-2 |
| ITF M25 Santo Domingo | 2023/02/20 14:00 | Ziwen Ju v Gabriel P Tumasonis | 7-6,6-3 |
| ITF M25 Santo Domingo Qual | 2023/02/19 13:00 | Liam Oliver v Gabriel P Tumasonis | 6-3,4-6,6-10 |
| ITF M25 Santo Domingo | 2023/02/14 13:00 | Gabriel P Tumasonis v Thomas Brown | 3-6,1-6 |
| ITF M25 Santo Domingo | 2023/02/13 17:00 | Gabriel P Tumasonis v Kenzo K Larsson | 7-5,6-4 |
| ITF M25 Vacaria | 2022/11/30 16:05 | Gabriel P Tumasonis v Gabriel Schenekenberg | 4-6,6-7 |
| ITF M25 Lajeado | 2022/11/22 23:10 | Lorenzo Joaquin Rodriguez v Gabriel P Tumasonis | 6-3,6-3 |