Stadium: Court 2 Round: 29 Ground: Clay
| ITF - M25 Santa Margherita | 2019/09/21 12:00 | Lucas Gerch v Di Nicola, Gianluca | 6-2,2-6,6-2 |
| ITF - M25 Santa Margherita | 2019/09/19 15:20 | Lucas Gerch v Luciano Darderi | 3-6,6-2,6-2 |
| ITF - M25 Santa Margherita | 2019/09/17 17:30 | Lucas Gerch v Louis Tessa | 6-3,6-4 |
| Challenger Banja Luka | 2019/09/09 14:20 | Lucas Gerch v Arnaboldi, Andrea | 3-6,5-7 |
| Challenger Meerbusch | 2019/08/14 11:15 | Lucas Gerch v Krstin, Pedja | 1-6,4-6 |
| Challenger Meerbusch | 2019/08/12 10:35 | Safranek, Vaclav v Lucas Gerch | 4-6,2-6 |
| Wetzlar, Singles Qualifying M-ITF-GER-11A | 2019/08/09 13:00 | Lucas Gerch v Santanna, B. | 6-1,1-6,3-6 |
| Wetzlar, Singles Qualifying M-ITF-GER-11A | 2019/08/08 15:10 | Lucas Gerch v Tchoutakian, Maxime | 6-1,6-3 |
| ITF - M25 Santa Margherita | 2019/09/21 12:00 | de Bakker, Thiemo v Matteo Gigante | 6-1,6-4 |
| ITF - M25 Santa Margherita | 2019/09/20 12:00 | de Bakker, Thiemo v Wilson Leite | 5-7,6-2,6-4 |
| ITF - M25 Santa Margherita | 2019/09/19 12:00 | de Bakker, Thiemo v Turchetti, Nicolo | 6-3,6-1 |
| ITF - M25 Santa Margherita | 2019/09/17 16:05 | de Bakker, Thiemo v Alexis Gautier | 6-3,7-5 |
| Trieste, Singles M-ITF-ITA-20A | 2019/09/03 17:30 | de Bakker, Thiemo v Peter Heller | 3-6,6-2,4-6 |
| Trieste, Singles M-ITF-ITA-20A | 2019/09/03 13:30 | de Bakker, Thiemo v Peter Heller | 3-6,6-2,4-6 |
| Challenger Meerbusch | 2019/08/13 08:00 | de Bakker, Thiemo v Pavlasek, Adam | 6-7,3-6 |
| Challenger Amersfoort | 2019/07/16 16:35 | de Bakker, Thiemo v Jan Choinski | 2-6,7-5,2-6 |