Stadium: Court 8 Round: 25 Ground: Clay
| UTR Pro Tennis Series Pazardzhik | 2021/04/10 09:00 | Jules Marie v Joncour, Ronan | 6-7,6-1,6-1 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/09 11:30 | Gabriel Donev v Joncour, Ronan | 5-7,3-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/08 08:30 | Yanaki Milev v Joncour, Ronan | 5-7,2-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/06 07:00 | de La Bassetiere, Constant v Joncour, Ronan | 7-5,4-6,4-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/05 13:00 | Joncour, Ronan v Milushev, Plamen | 6-1,6-3 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/04 07:00 | Joncour, Ronan v Faivre, Pierre | 4-6,0-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/03 07:00 | Joncour, Ronan v Meraut, Tristan | 7-5,6-1 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/02 11:30 | Joncour, Ronan v Lazov, Alexander | 1-6,5-7 |
| ITF M15 Skopje | 2021/06/01 09:30 | Petr Michnev v Boris Butulija | 6-3,6-2 |
| ITF M15 Skopje | 2021/05/31 12:30 | Petr Michnev v Samuele Pieri | 6-2,6-3 |
| ITF M15 Skopje | 2021/05/30 12:30 | Petr Michnev v Eskic, Relja | 6-2,6-0 |
| ITF M25 Prague | 2021/05/11 09:30 | Pavlasek, Adam v Petr Michnev | 6-4,6-2 |
| ITF M25 Prague | 2021/05/10 10:30 | Postolka, Roman v Petr Michnev | 3-6,2-6 |
| ITF M25 Prague | 2021/05/09 11:00 | Vojtech Vlkovsky v Petr Michnev | 6-2,5-7,8-10 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/04/20 12:40 | Vilardo, Francesco v Petr Michnev | 6-0,6-4 |
| ITF - M15 Sharm El Sheikh | 2021/03/21 09:30 | Petr Michnev v Lorenzo Rottoli | 6-4,3-6,4-10 |