Stadium: Court 3 Round: 25 Ground: Clay
| ITF Poland F4 Qual | 2015/08/30 07:30 | Adrian Andrzejczuk v Marek Gengel | 3-6,6-2,6-0 |
| ITF M15 Sharm El Sheikh | 2019/02/04 09:00 | Michiel de Krom v Adrian Andrzejczuk | 6-4,6-4 |
| ITF M15 Sharm El Sheikh | 2019/01/31 08:00 | Lukas Klein v Adrian Andrzejczuk | 5-7,6-0,6-0 |
| ITF M15 Sharm El Sheikh | 2019/01/29 08:00 | Rishab Agarwal v Adrian Andrzejczuk | 2-6,2-6 |
| ITF M15 Sharm El Sheikh | 2019/01/24 08:00 | Lukas Klein v Adrian Andrzejczuk | 6-1,6-3 |
| ITF M15 Sharm El Sheikh | 2019/01/23 11:20 | Adrian Andrzejczuk v Olexiy Kolisnyk | 6-1,6-2 |
| ITF M15 Sharm El Sheikh | 2019/01/21 11:30 | Adrian Andrzejczuk v Federico Iannaccone | 6-3,6-4 |
| ITF M15 Sharm El Sheikh | 2019/01/21 08:00 | Adrian Andrzejczuk v Sultan Narbekov | 6-3,6-2 |
| ITF Tunisia F44 | 2018/12/12 08:00 | Hugo Pontico v Adrian Andrzejczuk | 6-7,6-3,6-3 |
| ITF M15 Portimao | 2019/03/13 10:00 | Tomas Martin Etcheverry v Marek Gengel | 7-6,4-6,6-1 |
| ITF M15 Portimao | 2019/03/12 10:00 | Luke Johnson v Marek Gengel | 6-2,4-6,7-10 |
| ITF M15 Monastir | 2019/02/27 08:30 | Maxime Tchoutakian v Marek Gengel | 4-6,7-6,6-4 |
| ITF M15 Monastir | 2019/02/18 08:00 | Marek Gengel v Kyrian Jacquet | 5-7,6-7 |
| ITF M15 Kaarst | 2019/02/06 19:20 | Mick Veldheer v Marek Gengel | 6-1,6-4 |
| ITF M25 Nussloch | 2019/01/21 15:00 | Marek Gengel v Szymon Walkow | 6-4,6-7,6-10 |
| ITF M25 Nussloch | 2019/01/21 10:20 | Marek Gengel v Maik Steiner | 7-5,6-2 |
| Challenger Koblenz | 2019/01/14 18:20 | Marek Gengel v Roberto Ortega-Olmedo | 6-7,3-6 |