Stadium: Court 1 (Ringi) Round: 54 Ground: Hardcourt indoor
| ITF Finland F1 | 2018/07/30 07:00 | Kristofer Siimar v George Loffhagen | 1-6,0-6 |
| ITF Lithuania F1 | 2018/07/21 07:00 | Kristofer Siimar v Harrison Lombe | 4-6,5-7 |
| ITF Estonia F1 | 2018/07/18 08:00 | Kristofer Siimar v Markos Kalovelonis | 1-6,1-6 |
| ITF Estonia F1 | 2018/07/17 07:00 | Kristofer Siimar v Igor Gimenez | 6-3,3-6,7-5 |
| ITF Italy F13 | 2018/06/02 07:30 | Alex Solanki v Kristofer Siimar | 2-6,6-2,6-4 |
| ITF Finland F3 | 2017/08/14 10:00 | Roberto Marcora v Kristofer Siimar | 6-1,6-4 |
| ITF Finland F1 | 2017/08/01 09:40 | Axel Michon v Kristofer Siimar | 5-7,7-6,6-0 |
| ITF Estonia F1 | 2017/07/25 09:25 | Marc Dijkhuizen v Kristofer Siimar | 6-1,7-5 |
| ITF USA F24 | 2018/09/13 18:05 | Matej Vocel v Adrian Oetzbach | 6-0,6-1 |
| ITF USA F24 | 2018/09/12 16:30 | Adrian Oetzbach v Jianhui Li | 6-4,6-4 |
| ITF USA F24 | 2018/09/10 17:00 | Adrian Oetzbach v Ishaan Ravichander | 6-3,6-1 |
| ITF USA F24 | 2018/09/09 18:00 | Adrian Oetzbach v Bradley Frye | 1-6,6-4,7-6 |
| Challenger Meerbusch Qual | 2018/08/12 09:40 | Marc Sieber v Adrian Oetzbach | 6-0,6-0 |
| Challenger Meerbusch Qual | 2018/08/11 12:30 | Adrian Oetzbach v Pol Toledo Bague | 6-4,4-6,6-2 |
| ITF Germany F11 | 2018/08/08 16:00 | Mats Rosenkranz v Adrian Oetzbach | 6-4,7-5 |
| ITF Germany F11 | 2018/08/07 11:20 | Adrian Oetzbach v Daniel Kopeinigg | 7-5,1-6,6-4 |