Stadium: Court 1 Round: 54 Ground: Clay
| ITF M15 Eupen | 2019/08/05 09:00 | Dielen, Liam v Adan Freire Da Silva | 0-6,2-6 |
| Brussels, Singles M-ITF-BEL-03A | 2019/07/30 10:00 | Dielen, Liam v Hellfritsch, Lucas | 5-7,1-6 |
| Brussels, Singles M-ITF-BEL-03A | 2019/07/29 12:40 | Lechevretel, Louis v Dielen, Liam | 6-2,2-6,7-10 |
| Lasne, Singles Qualifying M-ITF-BEL-02A | 2019/07/01 12:00 | Charles Broom v Dielen, Liam | 6-2,6-3 |
| ITF M25 Arlon | 2019/06/24 14:55 | Dielen, Liam v Boris Fassbender | 2-6,2-6 |
| ITF Belgium F10 Qual | 2018/08/26 12:00 | Ignacio Monzon v Dielen, Liam | 6-0,6-2 |
| ITF Belgium F10 Qual | 2018/08/25 08:00 | van Nieuwenhove, Jonathan v Dielen, Liam | 6-2,5-7,3-6 |
| ITF Belgium F8 | 2018/08/13 15:30 | Pisane, Tom v Dielen, Liam | 6-4,7-5 |