Stadium: M (CC) Round: 25 Ground: Clay
| Troyes, Singles Qualifying M-ITF-FRA-13A | 2019/07/23 15:00 | Nicolas Tepmahc v Niels Lootsma | 4-6,6-7 |
| Challenger Amersfoort | 2019/07/15 11:10 | Aleksandre Metreveli v Niels Lootsma | 6-3,4-6,6-4 |
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/03 07:30 | Niels Lootsma v Dax Donders | 6-1,6-1 |
| ITF M15 Alkmaar | 2019/06/30 12:55 | Enrico Dalla Valle v Niels Lootsma | 7-6,6-4 |
| ITF M15 Alkmaar | 2019/06/29 11:00 | Niels Lootsma v Zukas, Matias | 4-6,6-4,7-5 |
| ITF M15 Alkmaar | 2019/06/28 11:00 | Niels Lootsma v Sinclair, Colin | 6-1,6-1 |
| ITF M15 Alkmaar | 2019/06/27 10:00 | Niels Lootsma v Roland Stuurman | 6-4,6-2 |
| ITF M15 Alkmaar | 2019/06/25 11:00 | Niels Lootsma v Yanais Laurent | 6-4,6-4 |
| ITF M15 Eupen | 2019/08/06 08:00 | Eisinga, Zachary v Hiramatsu, Shinnosuke | 6-4,2-6,9-11 |
| ITF M15 Eupen | 2019/08/05 09:00 | Hellfritsch, Lucas v Eisinga, Zachary | 7-6,6-7,4-10 |
| ITF M15 Alkmaar | 2019/06/27 09:55 | Eisinga, Zachary v Andrea Bolla | 6-7,3-6 |
| ITF M15 Alkmaar | 2019/06/26 09:40 | Eisinga, Zachary v Martinez, Alex | 4-6,6-2,6-4 |
| ITF Netherlands F6 | 2018/08/29 14:50 | Eisinga, Zachary v van Beem, Colin | 4-6,3-6 |
| ITF Netherlands F6 | 2018/08/27 10:00 | Oscar Moraing v Eisinga, Zachary | 6-7,1-6 |
| ITF Netherlands F6 | 2018/08/26 08:00 | Eisinga, Zachary v Zorzi, Sebastiano Mahoro | 6-1,6-3 |
| ITF Netherlands F5 | 2018/08/18 08:00 | Sollie, Thorsten v Eisinga, Zachary | 4-6,6-4,4-6 |