Ground: Clay
| ITF M25 Poznan | 2019/08/20 08:00 | Mats Rosenkranz v Stamoulos, Ioannis | 6-1,6-0 |
| Baja, Singles Qualifying M-ITF-HUN-03A | 2019/08/12 08:00 | Samuel Puskar v Stamoulos, Ioannis | 6-0,6-1 |
| Tanger, Singles M-ITF-MAR-01A | 2019/07/15 09:00 | Rieder, Horst v Stamoulos, Ioannis | 6-4,6-4 |
| ITF - M15 Héraklion | 2019/05/07 07:00 | Murphy, Brandon v Stamoulos, Ioannis | 7-5,6-1 |
| ITF - M15 Héraklion | 2019/05/06 07:00 | Stamoulos, Ioannis v Sobol, Rotem | 1-6,6-4,10-4 |
| ITF Poland F8 | 2018/08/18 08:00 | Andrzejczak, Bartlomiej v Wajdemajer, Jan | 3-6,3-6 |