Estadio: Court 1 Round: 26 Ground: Clay
| ITF M15 Oldenzaal | 2021/08/18 15:35 | Mattia Bellucci v Guy Den Ouden | 3-6,3-6 |
| ITF M15 Frederiksberg | 2021/08/03 10:55 | Guy Den Ouden v Sandro Kopp | 4-6,4-6 |
| ITF M15 Vejle | 2021/07/30 14:30 | Jonathan Mridha v Guy Den Ouden | 6-3,6-4 |
| ITF M15 Vejle | 2021/07/29 16:30 | Guy Den Ouden v Mick Veldheer | 6-4,6-0 |
| ITF M15 Vejle | 2021/07/28 11:50 | Sebastian Prechtel v Guy Den Ouden | 2-6,2-6 |
| ITF M15 Esch-sur-Alzette | 2021/07/20 13:00 | Jeffrey Von Der Schulenburg v Guy Den Ouden | 6-4,3-6,7-5 |
| Challenger de Amersfoort | 2021/07/11 14:00 | Guy Den Ouden v Diego Hidalgo | 3-6,6-7 |
| ITF M25 Marburgo | 2021/07/05 12:05 | Yan Sabanin v Guy Den Ouden | 7-6,6-4 |
| ITF M15 Oldenzaal | 2021/08/18 13:05 | George Loffhagen v Lorenzo Bocchi | 2-6,2-6 |
| ITF M15 El Cairo | 2021/08/06 10:50 | Lorenzo Bocchi v Jose Fco. Vidal Azorin | 0-6,6-4,3-6 |
| ITF M15 El Cairo | 2021/08/05 10:15 | Lorenzo Bocchi v Nathan Seateun | 6-7,7-6,6-2 |
| ITF M15 El Cairo | 2021/08/04 12:55 | Lorenzo Bocchi v Samuele Pieri | 6-2,2-6,7-5 |
| ITF M15 El Cairo | 2021/07/30 12:00 | Alejo Lorenzo Lingua Lavallen v Lorenzo Bocchi | 6-3,6-7,6-0 |
| ITF M15 El Cairo | 2021/07/29 09:50 | Samuele Pieri v Lorenzo Bocchi | 3-6,3-6 |
| ITF M15 El Cairo | 2021/07/28 12:25 | Egill Sigurdsson v Lorenzo Bocchi | 0-6,3-6 |
| ITF M15 El Cairo | 2021/07/23 07:55 | Kai Wehnelt v Lorenzo Bocchi | 3-6,6-4,6-2 |