Stadium: Court 10 Round: 25 Ground: Clay
| 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 Poland F4 Qual | 2017/07/02 13:00 | Mattias Siimar v Kristofer Siimar | 6-3,7-5 |
| Wimbledon Qual | 2018/06/25 10:00 | Jurgen Zopp v George Loffhagen | 7-6,6-0 |
| Challenger Ilkley | 2018/06/19 10:00 | George Loffhagen v Hiroki Moriya | 1-6,4-6 |
| Challenger Nottingham | 2018/06/11 10:00 | Peter Polansky v George Loffhagen | 3-6,6-1,6-3 |
| ITF Uganda F3 | 2018/05/15 06:00 | Shalva Dzhanashia v George Loffhagen | 6-2,7-6 |
| ITF Uganda F2 | 2018/05/12 10:05 | George Loffhagen v Fabrizio Ornago | 2-6,7-6,4-6 |
| ITF Uganda F2 | 2018/05/12 06:00 | George Loffhagen v Darko Bojanovic | 6-2,7-5 |
| ITF Uganda F2 | 2018/05/10 07:50 | George Loffhagen v Niklas Johansson | 6-4,6-2 |
| ITF Uganda F2 | 2018/05/08 07:30 | Tyler Lu v George Loffhagen | 1-6,2-6 |