Stadium: Court 4 Round: 62
| ITF - M15 Platja d'Aro | 2021/10/03 08:00 | Simon Beaupain v Tadas Babelis | 7-6,6-4 |
| ITF - M15 Cairo | 2021/09/30 12:00 | Simon Beaupain v Edoardo Lavagno | 7-6,3-6,4-6 |
| ITF - M15 Cairo | 2021/09/29 13:00 | Giovanni Calvano v Simon Beaupain | 2-6,4-6 |
| ITF - M15 Cairo | 2021/09/22 08:00 | Simon Beaupain v Simone Roncalli | 3-6,2-6 |
| ITF - M25 Eupen | 2021/09/10 15:00 | Matteo Arnaldi v Simon Beaupain | 6-3,7-6 |
| ITF - M25 Eupen | 2021/09/09 15:30 | Simon Beaupain v Oscar Moraing | 6-3,4-6,6-4 |
| ITF - M25 Eupen | 2021/09/08 15:30 | Simon Beaupain v Alexander Hoogmartens | 7-5,3-6,6-3 |
| ITF - M15 Huy | 2021/08/26 09:00 | Antonio Cayetano March v Simon Beaupain | 6-7,6-4,6-2 |
| ITF - M15 Platja d'Aro | 2021/10/03 08:00 | Zhenxiong Dong v Stefan Cizelj-Zivkovic | 4-6,4-6 |
| ITF - M15 Cairo | 2021/09/12 08:00 | Andrei Cuceu v Stefan Cizelj-Zivkovic | 6-4,6-3 |
| ITF - M15 Cairo | 2021/09/05 08:30 | Lucio Carnevalle v Stefan Cizelj-Zivkovic | 6-3,6-2 |
| ITF - M25 Velenje | 2021/07/05 12:15 | Stefan Cizelj-Zivkovic v Lukas Palovic | 3-6,1-6 |
| ITF - M25 Velenje | 2021/07/04 07:30 | Stefan Cizelj-Zivkovic v Marco Mania | 7-6,6-0 |
| ITF - M15 Tbilisi | 2021/05/17 05:30 | Aleksandr Braynin v Stefan Cizelj-Zivkovic | 6-4,6-3 |
| ITF - M15 Cairo | 2021/04/18 07:00 | Rimpei Kawakami v Stefan Cizelj-Zivkovic | 6-2,6-2 |
| ITF - M15 Cairo | 2021/04/11 08:00 | Stefan Cizelj-Zivkovic v Andrea Gola | 1-6,2-6 |