Stadium: Court 18 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Nules | 2021/11/14 11:00 | Ivan Bas Mengual v Pol Amoros Ramos | 6-7,4-6 |
| ITF M15 Benicarlo | 2021/11/07 08:30 | Lorenzo Rottoli v Ivan Bas Mengual | 6-4,3-6,10-4 |
| ITF M25 Madrid | 2021/10/26 08:00 | Ivan Bas Mengual v Tadas Babelis | 3-6,4-6 |
| ITF M25 Madrid | 2021/10/25 12:00 | Kirill Mishkin v Ivan Bas Mengual | 4-6,2-6 |
| ITF M15 Platja D'Aro | 2021/10/06 08:30 | Ivan Bas Mengual v Clement Tabur | 4-6,4-6 |
| ITF M25 Madrid | 2021/09/13 12:00 | Ivan Bas Mengual v Miguel Fernando Pereira | 4-6,4-6 |
| ITF M25 Madrid | 2021/09/12 13:00 | Asier P D Zulueta v Ivan Bas Mengual | 0-6,4-6 |
| ITF M25 Santander | 2021/08/22 11:30 | Pol Amoros Ramos v Ivan Bas Mengual | 6-4,6-1 |
| German Championship | 2021/12/08 09:00 | Tom Gentzsch v Luca Gelhardt | 4-6,1-6 |
| ITF M15 Heraklion | 2021/11/14 11:00 | Leon Hoeveler v Tom Gentzsch | 6-4,6-3 |
| ITF M25 Villers Les Nancy | 2021/11/07 09:00 | Matt Ponchet v Tom Gentzsch | 6-1,6-4 |
| ITF M15 Parnu | 2021/10/28 08:55 | Tom Gentzsch v Vladimir Ivanov | 7-5,2-6,4-6 |
| ITF M15 Parnu | 2021/10/27 13:55 | Tom Gentzsch v Robertas Vrzesinski | 6-1,6-2 |
| ITF M15 Parnu | 2021/10/26 08:00 | Tom Gentzsch v Oskar Antinheimo | 6-2,6-4 |
| ITF M25 Hamburg | 2021/10/19 09:25 | Daniel Little v Tom Gentzsch | 6-4,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/10/16 08:00 | Benjamin Hassan v Tom Gentzsch | 6-4,6-7,0-0 |