Round: 62 Ground: Clay
| ITF Austria F2 | 2018/07/07 08:00 | Jonathan Stenberg v Christian Fellin | 6-1,6-0 |
| ITF Austria F1 | 2018/06/30 11:00 | Jonathan Stenberg v Laurin Aerne | 0-6,6-7 |
| ITF Sweden F3 | 2018/05/23 09:15 | Manuel Guinard v Jonathan Stenberg | 6-0,6-0 |
| ITF Sweden F3 | 2018/05/22 11:35 | Milos Sekulic v Jonathan Stenberg | 6-7,6-7 |
| ITF Sweden F3 Qual | 2018/05/20 09:00 | Robin Thour v Jonathan Stenberg | 6-4,5-7,5-7 |
| ITF Sweden F3 Qual | 2018/05/19 10:40 | Kevin Kylar v Jonathan Stenberg | 3-6,5-7 |
| ITF Sweden F2 | 2018/05/16 11:55 | Jonathan Stenberg v George Botezan | 1-6,4-6 |
| ITF Sweden F2 | 2018/05/14 11:25 | Jonathan Stenberg v Adam Heinonen | 3-6,6-1,6-3 |
| ITF Austria F2 | 2018/07/07 12:30 | Neil Oberleitner v Jonathan Morr | 3-6,6-3,3-6 |
| ITF Austria F2 | 2018/07/07 07:15 | Alexander Romay v Jonathan Morr | 6-7,2-6 |
| ITF Austria F1 | 2018/06/30 11:00 | Sandro Kopp v Jonathan Morr | 6-2,6-2 |
| ITF Tunisia F25 | 2018/06/23 14:00 | Antonio Cayetano March v Jonathan Morr | 3-6,7-6,6-4 |
| ITF Germany F4 | 2018/06/17 12:00 | Karlo Cubelic v Jonathan Morr | 7-5,6-4 |
| ITF Hungary F3 | 2018/05/22 08:00 | Jonathan Morr v Mate Valkusz | 1-6,0-6 |
| ITF Hungary F3 Qual | 2018/05/21 08:00 | Jonathan Morr v Michael Gloeckler | 7-6,6-2 |
| ITF Hungary F3 Qual | 2018/05/20 10:00 | Jonathan Morr v Martin Zeljenka | 4-6,7-5,7-6 |