Stadium: Court T12 Round: 25 Ground: Clay
| ITF M15 Vienna | 2023/09/03 08:30 | Milos Karol v Peter Heller | 6-7,2-6 |
| ITF M15 Vienna | 2023/09/02 12:35 | Gerald Melzer v Peter Heller | 6-7,5-7 |
| ITF M15 Vienna | 2023/09/01 08:00 | Matthew William Donald v Peter Heller | 2-6,3-6 |
| ITF M15 Vienna | 2023/08/31 09:50 | Lukas Palovic v Peter Heller | 3-6,1-6 |
| ITF M15 Vienna | 2023/08/30 08:00 | Alessandro Ragazzi v Peter Heller | 1-6,6-7 |
| ITF M15 Uberlingen | 2023/08/17 10:05 | Jakob Schnaitter v Peter Heller | 1-6,7-5,6-4 |
| ITF M15 Uberlingen | 2023/08/16 16:00 | Filippo Speziali v Peter Heller | 2-6,3-6 |
| ITF M15 Eupen | 2023/08/12 12:15 | Peter Heller v Marc Majdandzic | 5-7,1-6 |
| Challenger Mallorca | 2023/08/31 15:45 | Martin Landaluce v Damir Dzumhur | 1-6,5-7 |
| Challenger Mallorca | 2023/08/30 17:50 | Peter Gojowczyk v Martin Landaluce | 6-3,4-6,6-7 |
| ITF M15 Monastir | 2023/08/26 08:30 | Lukas Pokorny v Martin Landaluce | 4-6,7-6,6-2 |
| ITF M15 Monastir | 2023/08/24 08:30 | Martin Landaluce v Antoine Ghibaudo | 7-5,6-4 |
| ITF M15 Monastir | 2023/08/22 11:50 | Martin Landaluce v Leopold Zima | 6-7,6-1,6-4 |
| ATP Umag | 2023/07/24 18:10 | Taro Daniel v Martin Landaluce | 1-6,7-5,6-2 |
| Challenger Amersfoort | 2023/07/18 17:00 | Martin Landaluce v Alec Deckers | 6-7,5-7 |
| ITF M25 Bourg-en-Bresse | 2023/07/01 15:50 | Martin Landaluce v Valentin Vacherot | 3-6,6-7 |