Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/05/27 06:30 | Luke Johnson v Harry Wendelken | 6-2,6-7,6-3 |
| ITF M15 Heraklion | 2021/05/26 10:10 | Harry Wendelken v Pablo Vivero Gonzalez | 6-4,6-1 |
| ITF M15 Heraklion | 2021/05/25 06:30 | Runhao Hua v Harry Wendelken | 6-2,6-1 |
| ITF M15 Heraklion | 2021/05/23 06:30 | Ioannis Papounidis v Harry Wendelken | 6-4,3-6,3-10 |
| ITF M15 Monastir | 2021/05/04 08:00 | Zachary Svajda v Harry Wendelken | 7-5,6-1 |
| ITF M15 Monastir | 2021/05/03 12:00 | Miguel Fernando Pereira v Harry Wendelken | 6-7,5-7 |
| ITF M15 Monastir | 2021/05/02 10:30 | Taketo Takamisawa v Harry Wendelken | 1-6,4-6 |
| ITF M15 Monastir | 2021/04/26 12:30 | Remy Bertola v Harry Wendelken | 6-4,3-6,10-5 |
| ITF M15 Sarajevo | 2021/05/31 12:00 | Tim Heger v Erdem Isitan | 6-4,4-6,10-7 |
| ITF M25 Kiseljak | 2021/05/27 10:30 | Tim Heger v Matheus Pucinelli De Almeida | 3-6,3-6 |
| ITF M25 Kiseljak | 2021/05/26 10:00 | Domagoj Biljesko v Tim Heger | 6-7,6-2,3-6 |
| ITF M25 Kiseljak | 2021/05/25 08:00 | Tim Heger v Marino Jakic | 6-3,6-7,10-1 |
| ITF M25 Kiseljak | 2021/05/24 08:00 | Tim Heger v Luka Puljic | 6-4,6-3 |
| ITF M25 Kiseljak | 2021/05/23 08:15 | Tim Heger v Joris Hoogland | 7-6,6-4 |
| ITF M15 Brcko | 2021/05/18 14:40 | Artem Dubrivnyy v Tim Heger | 6-3,6-1 |
| ITF M15 Prijedor | 2021/05/12 10:30 | Joao Lucas Reis da Silva v Tim Heger | 6-3,7-5 |