Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF Poland F2 | 2018/05/11 09:30 | Jonathan Gray v Maxim Ratniuk | 0-6,1-6 |
| ITF Estonia F3 | 2018/11/06 14:00 | Joshua Paris v Maxim Ratniuk | 6-4,6-4 |
| ITF Estonia F2 | 2018/10/31 10:50 | Karl Kiur Saar v Maxim Ratniuk | 7-5,6-1 |
| ITF Estonia F2 | 2018/10/29 10:40 | Aleksas Tverijonas v Maxim Ratniuk | 6-4,4-6,4-6 |
| ITF Turkey F32 | 2018/10/16 07:00 | Maxim Ratniuk v Mick Veldheer | 6-4,4-6,4-6 |
| ITF Turkey F31 | 2018/10/09 07:00 | Dejan Katic v Maxim Ratniuk | 6-4,6-3 |
| ITF Russia F8 | 2018/08/29 09:25 | Alexander Boborykin v Maxim Ratniuk | 6-1,7-6 |
| ITF Russia F8 | 2018/08/28 11:35 | Maxim Ratniuk v Shalva Dzhanashia | 2-6,7-6,6-2 |
| ITF Russia F7 | 2018/08/23 07:00 | Alexander Zhurbin v Maxim Ratniuk | 6-2,6-4 |
| ITF Tunisia F36 | 2018/10/21 09:00 | Alessandro Bega v Jonathan Gray | 6-7,4-6 |
| ITF Tunisia F36 | 2018/10/20 09:30 | Lance-Pierre Du Toit v Jonathan Gray | 6-7,4-6 |
| ITF Tunisia F36 | 2018/10/19 10:50 | Pierre Delage v Jonathan Gray | 5-7,6-7 |
| ITF Tunisia F35 | 2018/10/09 10:15 | Jonathan Gray v Luca Staeheli | 4-6,7-5,2-6 |
| ITF Portugal F18 | 2018/09/26 13:30 | Jonathan Gray v Joao Monteiro | 2-6,6-3,2-6 |
| ITF Great Britain F5 | 2018/09/19 10:30 | Antoine Bellier v Jonathan Gray | 6-4,6-1 |
| ITF Great Britain F5 | 2018/09/18 09:45 | Ryan Nijboer v Jonathan Gray | 6-4,3-6,2-6 |
| ITF France F17 | 2018/09/12 14:00 | Christopher Heyman v Jonathan Gray | 3-6,6-4,6-2 |