Stadium: Teremeer (4) Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Troisdorf | 2021/05/11 08:00 | Glenn Smits v Marlon Vankan | 3-6,6-4,10-8 |
| ITF - M15 Troisdorf | 2021/05/10 09:30 | Marlon Vankan v Yan Sabanin | 3-6,7-6,10-5 |
| ITF - M15 Troisdorf | 2021/05/09 08:00 | Marlon Vankan v Niklas Schell | 2-6,7-6,13-11 |
| ITF - M25 Meerbusch | 2021/04/12 07:30 | Hazem Naw v Marlon Vankan | 6-0,4-6,10-4 |
| ITF - M15 Antalya | 2021/03/28 06:30 | Deney Wassermann v Marlon Vankan | 6-1,6-4 |
| ITF - M15 Antalya | 2021/03/24 06:30 | Paul Woerner v Marlon Vankan | 6-4,6-2 |
| ITF - M15 Antalya | 2021/03/22 07:00 | Pablo Alemany v Marlon Vankan | 5-7,7-5,7-10 |
| ITF - M15 Antalya | 2021/03/17 13:55 | Dragos Dima v Marlon Vankan | 6-1,6-1 |
| Campionatul Europei de Est | 2020/12/22 12:35 | Aziz Kijametovic v Alexander Mannapov | 6-4,6-3 |
| Campionatul Europei de Est | 2020/12/21 11:00 | Duje Kekez v Alexander Mannapov | 7-5,6-1 |
| German Masters | 2020/08/28 15:40 | Inigo C Huegun v Alexander Mannapov | 6-3,6-4 |
| German Premier League | 2020/08/27 06:30 | Karlo Cubelic v Alexander Mannapov | 6-1,6-2 |
| German Premier League | 2020/08/26 14:40 | Peter Torebko v Alexander Mannapov | 6-3,7-5 |
| German Masters | 2020/08/21 18:45 | Benjamin Lock v Alexander Mannapov | 6-4,6-4 |
| German Masters | 2020/08/20 06:30 | Benito Sanchez Martinez v Alexander Mannapov | 6-4,4-6,6-0 |
| German Premier League | 2020/08/15 16:40 | Vlad Andrei Dancu v Alexander Mannapov | 7-6,4-6,6-7 |