Stadium: Court 10 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Doha | 2019/12/12 12:00 | Matija Pecotic v Harry Wendelken | 6-3,6-1 |
| ITF M15 Doha | 2019/12/11 10:00 | Mousa Shanan Zayed v Harry Wendelken | 1-6,4-6 |
| ITF M25 Falun | 2019/09/30 10:15 | Lucas Renard v Harry Wendelken | 6-1,7-6 |
| ITF M25 Falun | 2019/09/29 11:00 | Harry Wendelken v Dzianis Zharyn | 2-6,6-3,10-4 |
| ITF M25 Stockholm | 2019/09/25 13:10 | Harry Wendelken v Sam Taylor | 7-6,2-6,4-6 |
| Challenger Glasgow | 2019/09/17 12:10 | Jonathan Mridha v Harry Wendelken | 7-6,6-3 |
| ITF M25 Chiswick | 2019/08/06 13:50 | Harry Wendelken v Erik Crepaldi | 6-3,3-6,4-6 |
| ITF M25 Roehampton | 2019/07/31 08:30 | Antoine Cornut-Chauvinc v Harry Wendelken | 6-3,6-7,6-3 |
| ITF M15 Doha | 2019/12/12 12:00 | Maciej Smola v Jonathan Mridha | 2-6,2-6 |
| ITF M15 Doha | 2019/12/11 11:30 | Maciej Smola v Krittin Koaykul | 7-6,6-2 |
| ITF M15 Sharm El Sheikh | 2019/11/21 08:00 | Maciej Smola v Alexey Zakharov | 2-6,3-6 |
| ITF M15 Sharm El Sheikh | 2019/11/20 11:35 | Maciej Smola v Max Houkes | 2-6,6-2,7-6 |
| ITF M15 Sharm El Sheikh | 2019/11/14 08:00 | Karim-Mohamed Maamoun v Maciej Smola | 6-2,6-2 |
| ITF M15 Sharm El Sheikh | 2019/11/13 08:00 | Maciej Smola v Luca Potenza | 6-3,6-3 |
| ITF M15 Sharm El Sheikh | 2019/11/06 09:00 | Giorgio Ricca v Maciej Smola | 3-6,7-6,0-6 |
| ITF M15 Sharm El Sheikh | 2019/11/01 08:00 | Maciej Smola v Kacper Zuk | 4-6,2-6 |