Stadium: Court 3 Round: 25 Ground: Hardcourt indoor
| ITF Germany F16 | 2018/10/26 12:00 | Christopher Heyman v Altug Celikbilek | 1-6,4-6 |
| ITF Germany F16 | 2018/10/25 11:00 | Christopher Heyman v Giovanni Fonio | 6-4,6-3 |
| ITF Germany F16 | 2018/10/24 11:15 | Christopher Heyman v Leopold Zima | 6-2,6-3 |
| ITF Germany F16 | 2018/10/23 14:35 | Christopher Heyman v Maxime Pauwels | 4-6,7-5,7-6 |
| Challenger Ismaning | 2018/10/15 15:00 | Christopher Heyman v Benjamin Bonzi | 5-7,6-4,4-6 |
| Challenger Ortisei | 2018/10/07 08:00 | Christopher Heyman v Tobias Simon | 3-6,6-7 |
| ITF Sweden F4 | 2018/09/29 11:00 | Christopher Heyman v Markus Eriksson | 4-6,2-6 |
| ITF Sweden F4 | 2018/09/28 13:00 | Christopher Heyman v Martins Podzus | 6-4,6-1 |
| ITF Lebanon F1 | 2018/09/29 13:00 | Alexandre Muller v Guillermo Olaso | 4-6,6-3,6-0 |
| ITF Lebanon F1 | 2018/09/28 13:00 | Guillermo Olaso v Edoardo Eremin | 6-1,6-4 |
| ITF Lebanon F1 | 2018/09/27 13:00 | Guillermo Olaso v Hasan Ibrahim | 6-2,6-4 |
| ITF Lebanon F1 | 2018/09/26 14:35 | Guillermo Olaso v Jaroslav Pospisil | 6-1,6-1 |
| ITF Germany F8 | 2018/07/19 11:35 | Orlando Luz v Guillermo Olaso | 7-6,6-0 |
| ITF Germany F8 | 2018/07/18 11:25 | Lucas Gerch v Guillermo Olaso | 2-6,3-6 |
| ITF Spain F16 | 2018/06/27 18:45 | Evan Hoyt v Guillermo Olaso | 4-6,6-2,6-4 |
| ITF Spain F16 | 2018/06/26 19:40 | Antonio Cembellin Prieto v Guillermo Olaso | 3-6,3-6 |