Stadium: Court Tsitsipas Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Héraklion | 2019/11/12 08:30 | Stamoulos, Ioannis v Veldheer, Mick | 0-6,0-6 |
| ITF - M15 Héraklion | 2021/11/08 09:00 | Stamoulos, Ioannis v Tzicas, Charles | 0-6,3-6 |
| ITF - M15 Héraklion | 2021/11/03 10:15 | Evangelos Kypriotis v Stamoulos, Ioannis | 1-6,6-4,4-6 |
| ITF - M15 Héraklion | 2021/11/02 07:00 | Stamoulos, Ioannis v Christian Fellin | 3-6,6-4,10-8 |
| ITF M15 Sozopol | 2021/09/12 11:00 | Gorbatenko, Vladislav v Stamoulos, Ioannis | 6-2,6-2 |
| ITF M25 Poznan | 2021/08/22 08:00 | Jesse De Jager v Stamoulos, Ioannis | 6-3,6-0 |
| ITF M15 Lodz | 2021/08/15 09:30 | Stamoulos, Ioannis v Bojarski, Alan | 3-6,0-6 |
| ITF - M15 Héraklion | 2020/03/02 08:30 | Stamoulos, Ioannis v Pietro Marino | 1-6,2-6 |
| ITF - M15 Héraklion | 2020/02/26 13:20 | Coleman Wong v Stamoulos, Ioannis | 6-3,5-7,6-0 |
| ITF - M15 Héraklion | 2021/11/12 10:00 | Mark Lajal v Veldheer, Mick | 6-1,6-2 |
| ITF - M15 Héraklion | 2021/11/11 09:00 | Ragazzi, Alessandro v Veldheer, Mick | 3-6,2-6 |
| ITF - M15 Héraklion | 2021/11/10 12:25 | Federico Salomone v Veldheer, Mick | 3-6,6-4,1-6 |
| ITF M15 Selva Gardena | 2021/10/27 13:15 | Dambrosi, Giacomo v Veldheer, Mick | 3-6,6-2,7-6 |
| ITF M15 Selva Gardena | 2021/10/26 14:30 | Prechtel, Sebastian v Veldheer, Mick | 5-7,4-6 |
| ITF - M25 Quinta Do Lago | 2021/10/21 11:35 | Veldheer, Mick v Anton Matusevich | 4-6,6-4,4-6 |
| ITF - M25 Quinta Do Lago | 2021/10/20 15:15 | Veldheer, Mick v Romios, Matthew Christopher | 6-2,4-6,6-1 |
| ITF - M25 Loulé | 2021/10/13 09:30 | Veldheer, Mick v Adria Soriano Barrera | 1-6,4-6 |