Stadium: Court 6 Round: 26 Ground: Clay
| ITF M25 Ricany | 2019/09/24 11:30 | Niels Lootsma v Meis, Pascal | 6-1,6-2 |
| ITF M25 Plaisir | 2019/09/18 09:35 | Antoine Bellier v Niels Lootsma | 6-4,6-7,6-3 |
| ITF M15 Oldenzaal | 2019/08/14 11:00 | Niels Lootsma v Eisinga, Zachary | 7-6,3-6,1-6 |
| 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 M25 Ricany | 2019/09/25 14:05 | Marek, Wojciech v Rumler, Robert | 7-5,7-6 |
| ITF M25 Ricany | 2019/09/24 08:00 | Marek, Wojciech v Michl, Filip | 6-1,6-1 |
| ITF M25 Ricany | 2019/09/23 09:00 | Marek, Wojciech v Matyas Cerny | 6-0,6-0 |
| Poznan, Poland | 2019/06/04 08:00 | Marek, Wojciech v Bangoura, Sekou | 4-6,1-6 |
| Piestany, Singles M-ITF-SVK-02A | 2019/05/10 12:20 | Marek, Wojciech v Nagy, Peter | 4-6,6-3,2-6 |
| Piestany, Singles M-ITF-SVK-02A | 2019/05/10 08:00 | Kalenichenko, Danylo v Marek, Wojciech | 1-6,5-7 |
| Piestany, Singles M-ITF-SVK-02A | 2019/05/08 08:00 | Marek, Wojciech v Kodat, Toby Alex | 6-3,6-2 |
| Czech Republic F11, Singles | 2018/11/23 10:00 | Marek, Wojciech v Jiri Lehecka | 1-6,6-4,5-7 |