| Qatar F5, Simples | 2016/12/06 07:00 | Lazov, Alexander v Joncour, Ronan | 6-0,6-1 |
| UTR Pro Tennis Series Pazardzhik | 2021/03/31 11:30 | Joncour, Ronan v Eric Vanshelboim | 1-6,1-5 |
| UTR Pro Tennis Series Pazardzhik | 2021/03/29 10:30 | Tatlot, Johan Sebastien v Joncour, Ronan | 6-4,3-6,6-1 |
| ITF - M25 Vale Do Lobo | 2021/03/08 10:00 | Joncour, Ronan v Fernandes, Tiago Rodrigo | 6-1,6-1 |
| ITF - M25 Vale Do Lobo | 2021/03/07 11:00 | Joncour, Ronan v Marujo, Martim | 6-2,6-2 |
| ITF - M25 Faro | 2021/03/03 11:00 | Graziani, Edoardo v Joncour, Ronan | 6-4,3-6,6-3 |
| ITF - M25 Faro | 2021/03/02 10:00 | Joncour, Ronan v Stoliar, Illia | 6-1,6-4 |
| ITF - M25 Faro | 2021/03/01 11:00 | Joncour, Ronan v Stepanian, Areg | 6-1,6-1 |
| ITF - M25 Faro | 2021/02/28 11:00 | Joncour, Ronan v Guerrero Melgar, Angel | 6-1,6-3 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/01 12:00 | Dimitrov, Martin v Lazov, Alexander | 0-6,1-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/03/29 10:30 | Lazov, Alexander v Eric Vanshelboim | 2-6,2-5 |
| Istanbul, Turkey | 2019/09/10 07:00 | Lazov, Alexander v Roumane, Rayane | 5-7,6-2,1-6 |
| ITF M15 Sozopol | 2019/05/09 09:40 | Alexander Donski v Lazov, Alexander | 6-2,6-2 |
| ITF M15 Sozopol | 2019/05/08 11:00 | Elbaz, Shahar v Lazov, Alexander | 0-6,6-7 |
| Challenger Andria | 2018/11/18 17:05 | Aldin Setkic v Lazov, Alexander | 6-3,6-4 |
| Challenger Andria | 2018/11/17 13:00 | Dambrosi, Giacomo v Lazov, Alexander | 6-7,1-6 |
| Challenger Bratislava | 2018/11/03 16:40 | Lazov, Alexander v Artunedo Martinav. | 7-5,0-6,2-6 |