| ITF Netherlands F4 | 2018/08/11 09:00 | Aloys J W Van Baal v Niklas Koch | 6-1,6-2 |
| UTR Pro Tennis Series Amsterdam | 2021/12/10 10:00 | Rik Muller v Aloys J W Van Baal | 6-7,4-6 |
| UTR Pro Tennis Series Amsterdam | 2021/12/09 07:00 | Amadatus Admiraal v Aloys J W Van Baal | 6-4,6-6 |
| ITF M15 Oldenzaal | 2021/08/16 10:00 | Zachary Eisinga v Aloys J W Van Baal | 3-6,6-4,10-7 |
| ITF M15 Oldenzaal | 2021/08/15 08:30 | Yannick Verwater v Aloys J W Van Baal | 3-6,1-6 |
| ITF M25 Hága | 2021/06/27 08:00 | Aloys J W Van Baal v Raphael Collignon | 4-6,3-6 |
| ITF M15 Szkopje | 2021/06/07 09:00 | Max Houkes v Aloys J W Van Baal | 6-2,6-2 |
| ITF M15 Szkopje | 2021/05/30 07:00 | Aloys J W Van Baal v Tom Gentzsch | 1-6,7-5,7-10 |
| ITF M15 Monastir | 2021/03/28 10:30 | Aloys J W Van Baal v Pietro Pampanin | 4-6,2-6 |
| UTR Pro Tennis Series Amsterdam | 2021/12/10 08:30 | Deney Wassermann v Niklas Koch | 6-2,6-3 |
| UTR Pro Tennis Series Amsterdam | 2021/12/09 11:55 | Nathan De Veer v Niklas Koch | 6-1,6-5 |
| UTR Pro Tennis Series Amsterdam | 2021/12/07 10:00 | Yan Sabanin v Niklas Koch | 3-6,3-5 |
| UTR Pro Tennis Series Amsterdam | 2021/12/06 07:00 | Niklas Koch v Miko Wassermann | 6-4,6-7,3-6 |
| ITF M25 Eupen | 2021/09/06 11:00 | Buvaysar Gadamauri v Niklas Koch | 6-2,6-2 |
| ITF M25 Eupen | 2021/09/05 12:00 | Niklas Koch v Arslanbek Temirhanov | 6-1,6-2 |
| ITF M15 Manacor | 2020/01/12 11:30 | Billy Harris v Niklas Koch | 6-1,6-1 |
| ITF M15 Manacor | 2020/01/05 09:00 | Benjamin Pietri v Niklas Koch | 6-0,6-1 |