Stadium: Court 5 Round: 27 Ground: Hardcourt outdoor
| ITF Turkey F21 | 2018/05/31 11:10 | Christopher Heyman v Jonas Trinker | 6-7,6-3,7-6 |
| ITF Turkey F21 | 2018/05/29 07:30 | Christopher Heyman v Neven Krivokuca | 7-6,6-0 |
| Challenger Lisbon Qual | 2018/05/12 13:35 | Christopher Heyman v David Vega Hernandez | 1-6,3-6 |
| Challenger Braga | 2018/05/08 17:25 | Pedro Sousa v Christopher Heyman | 6-2,6-2 |
| Challenger Guadalajara | 2018/04/17 17:00 | Christopher Heyman v Alexander Sarkissian | 4-6,6-7 |
| Challenger Mexico City | 2018/04/09 22:25 | Christopher Heyman v Adrian Menendez-Maceiras | 6-1,5-7,2-6 |
| ITF Portugal F6 | 2018/03/29 11:00 | Andres Artunedo Martinavarr v Christopher Heyman | 6-2,6-1 |
| ITF Portugal F6 | 2018/03/28 14:45 | Jaime Pulgar-Garcia v Christopher Heyman | 3-6,2-6 |
| ITF Turkey F21 | 2018/05/31 07:30 | Luis Patino v Georg Winkler | 6-4,5-7,3-6 |
| ITF Turkey F21 | 2018/05/30 09:00 | Georg Winkler v Anton Zaitcev | 7-5,6-2 |
| ITF Italy F7 Qual | 2018/04/09 12:30 | Facundo Juarez v Georg Winkler | 6-3,6-2 |
| ITF Italy F7 Qual | 2018/04/08 13:30 | Mike Loccisano v Georg Winkler | 4-6,4-6 |
| ITF Italy F6 Qual | 2018/04/01 12:00 | Georg Winkler v Alexander Weis | 5-7,5-7 |
| ITF Italy F6 Qual | 2018/03/31 08:00 | Alexis Santin v Georg Winkler | 3-6,1-6 |
| ITF Italy F4 Qual | 2018/03/19 13:00 | Davide Pontoglio v Georg Winkler | 7-5,6-2 |
| ITF Italy F4 Qual | 2018/03/18 14:00 | Artem Strokan v Georg Winkler | 3-6,2-6 |