Stadium: Court 8 Round: 62 Ground: Clay
| ITF M15 Monastir | 2021/10/26 10:00 | Simon Beaupain v Theo Arribage | 6-2,3-6,6-1 |
| ITF M25 Toulouse | 2021/10/18 16:10 | Constantin Bittoun Kouzmine v Theo Arribage | 6-2,3-6,10-8 |
| ITF M15 Platja D'Aro | 2021/10/04 11:00 | Andrea Picchione v Theo Arribage | 6-4,6-2 |
| ITF M15 Platja D'Aro | 2021/10/03 08:00 | Theo Arribage v Yeray A. Pastor | 2-6,6-3,10-6 |
| ITF M15 Monastir | 2021/09/08 08:00 | Li Tu v Theo Arribage | 6-0,6-1 |
| ITF M15 Monastir | 2021/09/07 08:00 | Theo Arribage v Chanchai Sookton-Eng | 4-6,6-4,10-7 |
| ITF M15 Monastir | 2021/09/06 11:00 | August Holmgren v Theo Arribage | 6-4,5-7,9-11 |
| ITF M15 Monastir | 2021/09/05 12:30 | Theo Arribage v Lohithaksha Bathrinath | 6-4,3-6,10-5 |
| ITF M25 Hamburg | 2021/10/21 08:00 | Lenny Hampel v Tim Sandkaulen | 6-4,7-6 |
| ITF M25 Hamburg | 2021/10/19 08:00 | Tim Sandkaulen v Marvin Moeller | 6-4,7-5 |
| ITF M25 Hamburg | 2021/10/17 14:50 | Benjamin Dhoe v Tim Sandkaulen | 6-7,6-2,5-10 |
| ITF M25 Hamburg | 2021/10/17 11:10 | Alen Moritz Hodzic v Tim Sandkaulen | 6-7,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/14 13:00 | Edison Ambarzumjan v Tim Sandkaulen | 3-6,0-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/13 10:00 | Jing L Weng v Tim Sandkaulen | 3-6,2-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 07:00 | Constantin Schmitz v Tim Sandkaulen | 6-4,7-5 |
| UTR Pro Tennis Series Mulheim | 2021/07/31 08:30 | Hazem Naw v Tim Sandkaulen | 6-4,7-6 |