Stadium: Court 11 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Sozopol | 2021/09/17 07:00 | Valentin Vacherot v Petru-Alexandru Luncanu | 6-2,6-0 |
| ITF M15 Sozopol | 2021/09/16 07:00 | Petru-Alexandru Luncanu v George Lazarov | 6-1,1-6,7-6 |
| ITF M15 Sozopol | 2021/09/15 09:30 | Mert Ramadan v Petru-Alexandru Luncanu | 6-1,2-6,2-6 |
| ITF M25 Bacau | 2021/08/17 06:55 | Petru-Alexandru Luncanu v Ilya Snitari | 4-6,2-6 |
| UTR Pro Tennis Series Bucharest | 2021/06/04 08:30 | Juan Pablo Paz v Petru-Alexandru Luncanu | 6-3,6-1 |
| UTR Pro Tennis Series Bucharest | 2021/06/03 06:00 | Tudor Vlad Vasilache v Petru-Alexandru Luncanu | 1-6,0-6 |
| UTR Pro Tennis Series Bucharest | 2021/06/02 15:00 | Facundo Juarez v Petru-Alexandru Luncanu | 6-7,4-5 |
| UTR Pro Tennis Series Bucharest | 2021/05/30 13:00 | Gheorghe Claudiu Schinteie v Petru-Alexandru Luncanu | 4-6,1-5 |
| ITF M15 Doha | 2021/12/14 12:00 | Haoyuan Huang v Leyton Rivera | 6-7,4-6 |
| ITF M15 Doha | 2021/12/13 14:25 | Leyton Rivera v Luca Sanchez | 7-6,6-4 |
| ITF M15 Doha | 2021/12/12 12:00 | Leyton Rivera v Tathagat Charantimath | 6-2,7-6 |
| ITF M15 Ostrava | 2021/11/22 09:00 | Scott Duncan v Leyton Rivera | 3-6,6-4,10-8 |
| ITF M15 Ostrava | 2021/11/21 12:00 | Leyton Rivera v Daniel Paty | 6-3,6-1 |
| ITF M15 Opava | 2021/11/15 10:40 | Dominik Recek v Leyton Rivera | 6-2,6-4 |
| ITF M15 Opava | 2021/11/14 11:00 | Krystof Zapsky v Leyton Rivera | 3-6,4-6 |
| ITF M15 Antalya | 2021/10/24 07:00 | Leyton Rivera v Kalin Ivanovski | 3-6,6-7 |