Stadium: Centre Court Round: 24 Ground: Hardcourt indoor
| Challenger - Glasgow | 2019/09/16 09:00 | Jonathan Mridha v Walkow, Szymon | 4-6,6-2,7-6 |
| ITF M25 Poznan | 2019/08/23 09:00 | Hidalgo, Diego v Jonathan Mridha | 7-6,7-5 |
| ITF M25 Poznan | 2019/08/22 10:20 | Jonathan Mridha v Pedro Sakamoto | 7-6,6-0 |
| ITF M25 Poznan | 2019/08/21 10:00 | Jonathan Mridha v Manafov, Vladyslav | 3-6,7-6,6-4 |
| Bydgoszcz, Singles Qualifying M-ITF-POL-04A | 2019/08/15 11:35 | Dougaz, Aziz v Jonathan Mridha | 6-4,2-6,7-6 |
| Bydgoszcz, Singles Qualifying M-ITF-POL-04A | 2019/08/13 12:00 | David Pichler v Jonathan Mridha | 6-2,6-7,4-6 |
| Wetzlar, Singles Qualifying M-ITF-GER-11A | 2019/08/08 11:00 | Jonathan Mridha v Andrea Bolla | 6-4,6-7,5-7 |
| Wetzlar, Singles Qualifying M-ITF-GER-11A | 2019/08/07 10:30 | Jonathan Mridha v Batlle, Carles | 6-4,6-3 |
| Chiswick, Singles W-ITF-GBR-09A | 2019/08/06 13:50 | Harry Wendelken v Crepaldi, Erik | 6-3,3-6,4-6 |
| ITF M25 Roehampton | 2019/07/31 08:30 | Cornut-Chauvinc, Antoine v Harry Wendelken | 6-3,6-7,6-3 |
| ITF M25 Roehampton | 2019/07/29 15:00 | Martins Rocens v Harry Wendelken | 2-6,5-7 |
| ITF M25 Roehampton | 2019/07/29 10:15 | Harry Wendelken v Nusdeo, Joao Marcos | 6-1,6-4 |
| ITF M15 Loule | 2019/03/06 14:30 | Pedro Araujo v Harry Wendelken | 7-5,7-5 |
| ITF M15 Faro | 2019/02/27 15:00 | Grills, Jacob v Harry Wendelken | 6-3,6-2 |
| Barnstaple, Singles Qualifying M-ITF-GBR-01A | 2019/02/11 11:45 | Harry Wendelken v Robert Strombachs | 3-6,5-7 |
| ITF Great Britain F6 | 2017/09/26 10:30 | Harry Wendelken v Farquharson, Tom | 2-6,4-6 |