Stadium: Court 2 Round: 62 Ground: Clay
| ITF M25 Praha | 2023/05/18 13:30 | Maxim Mrva v Matthew William Donald | 6-2,7-5 |
| ITF M25 Praha | 2023/05/17 11:00 | Jiri Cizek v Matthew William Donald | 6-7,3-6 |
| ITF M25 Praha | 2023/05/16 10:35 | Stepan Mruzek v Matthew William Donald | 3-6,2-6 |
| ITF M15 Osijek | 2023/05/03 08:00 | Aldin Setkic v Matthew William Donald | 7-6,6-2 |
| ITF M15 Meerbusch | 2023/04/27 11:10 | Matthew William Donald v Deney Wassermann | 2-6,3-6 |
| ITF M15 Meerbusch | 2023/04/25 11:00 | Max Alcala Gurri v Matthew William Donald | 4-6,0-6 |
| ITF M25 Trnava | 2023/03/29 13:55 | Matthew William Donald v Yanki Erel | 6-3,6-7,1-6 |
| ITF M25 Trnava | 2023/03/28 07:55 | Matthew William Donald v Daniel Balascak | 6-0,6-3 |
| ITF M25 Most | 2023/05/21 08:00 | Martin Soukal v Markus Wunder | 6-0,4-6,6-10 |
| ITF M25 Praha | 2023/05/14 11:00 | Michal Krajci v Markus Wunder | 6-2,2-6,10-7 |
| ITF M15 Alaminos-Larnaca | 2023/05/01 08:30 | Jonathan Baron v Markus Wunder | 6-3,2-6,10-7 |
| ITF M15 Alaminos-Larnaca | 2023/04/30 08:30 | Martin Mazev v Markus Wunder | 3-6,2-6 |
| ITF M15 Alaminos-Larnaca | 2023/04/24 09:30 | Markus Wunder v Cristian Campese | 5-7,7-6,9-11 |
| ITF M15 Alaminos-Larnaca | 2023/04/23 07:00 | Markus Wunder v Calvin Thalheimer | 6-0,6-1 |
| ITF M25 Split | 2023/04/17 12:00 | Luka Miklavcic v Markus Wunder | 1-6,6-0,10-8 |
| ITF M15 Antalya | 2023/04/03 13:25 | Dax Donders v Markus Wunder | 6-4,6-0 |