Stadium: Stadium Court Round: 54 Ground: Hardcourt indoor
| ITF M15 Metzingen | 2023/07/23 07:30 | Melzer, Lennart v Enzo Lima | 5-7,5-7 |
| ITF M25 Esch/Alzette Qual | 2023/07/16 08:00 | Melzer, Lennart v Vladimir Kravec | 3-6,6-2,4-10 |
| ITF M25 Esch/Alzette | 2023/07/09 11:30 | Melzer, Lennart v Stanke, Cedric | 1-6,3-6 |
| ITF M25 Marburg | 2023/07/03 08:00 | Philipp Pavlenko v Melzer, Lennart | 6-3,6-1 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/18 09:00 | 불리트스키, 알리아크산들 v Melzer, Lennart | 6-2,6-0 |
| ITF M15 Bagnoles-de-l'Orne | 2022/01/09 14:50 | Melzer, Lennart v Jardin, Hugo | 3-6,0-6 |
| ITF M25 Villers Les Nancy | 2021/11/07 09:00 | Melzer, Lennart v 메흐로트라, 아르준 | 2-6,2-6 |
| ITF M25 Saint Dizier | 2021/10/31 10:30 | Pierre, Hugo v Melzer, Lennart | 6-2,6-2 |
| Czech Republic Extraliga | 2023/12/18 09:00 | 두다, 필리프 v Jakub Vrba | 7-5,6-1 |
| ITF M15 Sharm El Sheikh | 2023/11/22 14:35 | 자라이, 패트릭 v 두다, 필리프 | 6-4,4-6,6-1 |
| ITF M15 Sharm El Sheikh | 2023/11/21 08:00 | 두다, 필리프 v Nicolo Consonni | 6-4,6-3 |
| ITF M15 Sharm El Sheikh | 2023/11/19 10:30 | 두다, 필리프 v 피오렌티니, 안드레아 | 7-6,6-3 |
| ITF M25 Santa Margherita | 2023/10/25 08:00 | 두다, 필리프 v 파티크, 네르만 | 2-6,1-6 |
| ITF M25 Santa Margherita | 2023/10/23 08:00 | 카라로, 루치아노 v 두다, 필리프 | 6-2,2-6,10-8 |
| ITF M25 Santa Margherita | 2023/10/22 08:30 | Carlo Venturini v 두다, 필리프 | 2-6,3-6 |
| ITF M25 Santa Margherita | 2023/10/16 07:55 | 카라로, 루치아노 v 두다, 필리프 | 6-1,2-6,11-9 |