Stadium: Court 5 Round: 25 Ground: Clay
| ITF M25 Marburg | 2023/07/06 10:35 | Alex Rybakov v Tom Gentzsch | 6-7,6-3,6-2 |
| ITF M15 Kamen | 2023/07/01 12:40 | Hynek Barton v Tom Gentzsch | 7-6,7-5 |
| ITF M15 Kamen | 2023/06/29 08:50 | Tom Gentzsch v Marc Majdandzic | 6-3,4-6,7-6 |
| ITF M15 Kamen | 2023/06/27 09:55 | Tom Gentzsch v Illya Beloborodko | 6-3,6-4 |
| ITF M15 Saarlouis | 2023/06/22 11:10 | Tom Gentzsch v Jeffrey Von Der Schulenburg | 4-6,3-6 |
| ITF M15 Saarlouis | 2023/06/21 16:25 | Luca Staeheli v Tom Gentzsch | 6-4,3-6,2-6 |
| ITF M15 Monastir | 2023/06/13 09:40 | Gilbert S K Junior v Tom Gentzsch | 6-3,6-4 |
| ITF M15 Vaasa | 2023/06/10 08:00 | Karl Friberg v Tom Gentzsch | 6-1,6-1 |
| ITF M25 Marburg | 2023/07/07 15:30 | Alex Rybakov v Aldin Setkic | 6-3,7-5 |
| ITF M25 Marburg | 2023/07/06 09:00 | Aldin Setkic v Daniel Salazar | 2-6,6-2,6-4 |
| ITF M25 Marburg | 2023/07/05 12:20 | Aldin Setkic v Neo Niedner | 6-2,6-3 |
| Challenger Troisdorf | 2023/05/28 10:00 | Constantin Bittoun Kouzmine v Aldin Setkic | 6-7,6-4,6-4 |
| ITF M15 Brcko | 2023/05/24 07:30 | Aleksa Mardjonovic v Aldin Setkic | 2-6,7-6,7-5 |
| Challenger Mauthausen | 2023/05/07 08:00 | Benjamin Hassan v Aldin Setkic | 6-2,6-0 |
| ITF M15 Osijek | 2023/05/05 12:35 | Aldin Setkic v Luka Mikrut | 3-6,6-3,3-6 |
| ITF M15 Osijek | 2023/05/04 09:00 | Aldin Setkic v Hayato Matsuoka | 6-2,4-6,7-6 |