Stadium: Court 4 Round: 28 Ground: Hardcourt outdoor
| ITF Turkey F21 | 2018/06/01 09:55 | Christopher Heyman v Georg Winkler | 3-6,6-4,6-3 |
| 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 Turkey F21 | 2018/06/01 08:00 | Dimitriy Voronin v Peter Heller | 0-6,2-6 |
| ITF Turkey F21 | 2018/05/31 07:30 | Mats Rosenkranz v Peter Heller | 3-6,4-6 |
| ITF Turkey F21 | 2018/05/30 07:30 | Alp Sentay v Peter Heller | 1-6,0-6 |
| ITF Czech Republic F2 | 2018/05/27 08:30 | Peter Heller v Sekou Bangoura | 4-6,3-6 |
| ITF Czech Republic F2 | 2018/05/26 11:00 | Bruno Santanna v Peter Heller | 4-6,3-6 |
| ITF Czech Republic F2 | 2018/05/25 10:05 | Tomas Machac v Peter Heller | 1-6,7-5,0-6 |
| ITF Czech Republic F2 | 2018/05/24 08:30 | Dominik Kellovsky v Peter Heller | 1-6,2-6 |
| ITF Czech Republic F2 | 2018/05/23 12:20 | Kai Wehnelt v Peter Heller | 1-6,3-6 |