Stadium: Court 21 Round: 25 Ground: Clay
| ITF Turkey F21 | 2018/06/03 07:30 | Peter Heller v Marsel Ilhan | 2-6,6-2,6-3 |
| ITF Turkey F12 | 2018/03/30 09:10 | Marsel Ilhan v Peter Heller | 6-4,7-5 |
| ITF M15 Antalya | 2023/04/18 08:25 | Sean Hess v Marsel Ilhan | 6-3,0-6,7-10 |
| ITF M15 Antalya | 2023/04/17 11:10 | Eric David Verdes v Marsel Ilhan | 2-6,2-6 |
| ITF M15 Antalya | 2023/04/16 07:00 | Sacha Ouzilou v Marsel Ilhan | 7-6,3-6,7-10 |
| UTR Pro Florida | 2023/04/01 15:30 | Marsel Ilhan v Yannik Rahman | 6-4,4-6,4-5 |
| UTR Pro Florida | 2023/03/31 15:30 | Jean-Christian Morandais v Marsel Ilhan | 1-6,1-6 |
| UTR Pro Florida | 2023/03/29 15:00 | Marsel Ilhan v Sean Daryabeigi | 6-4,5-7,4-6 |
| UTR Pro Florida | 2023/03/28 19:51 | Felipe Pinzon Moreno v Marsel Ilhan | 4-6,4-6 |
| ITF M15 Antalya | 2023/02/28 08:20 | Marsel Ilhan v Samuele Pieri | 3-6,4-6 |
| ITF M15 Antalya | 2023/04/05 09:55 | Michel Hopp v Peter Heller | 1-6,4-6 |
| ITF M15 Antalya | 2023/04/01 09:55 | Peter Heller v Cezar Cretu | 4-6,4-6 |
| ITF M15 Antalya | 2023/03/31 11:05 | Peter Heller v Mirko Martinez | 6-1,6-7,6-2 |
| ITF M15 Antalya | 2023/03/30 09:30 | Peter Heller v Nicolas Zanellato | 6-1,6-1 |
| ITF M15 Antalya | 2023/03/29 11:45 | Peter Heller v Adam Moundir | 3-6,6-2,6-4 |
| ITF M15 Antalya | 2023/03/26 08:00 | Gilles Arnaud Bailly v Peter Heller | 6-3,4-6,7-5 |
| ITF M15 Antalya | 2023/03/25 08:00 | Peter Heller v Calin Manda | 6-4,6-7,6-2 |
| ITF M15 Antalya | 2023/03/24 07:20 | Peter Heller v Max Alcala Gurri | 6-4,6-4 |