Stadium: Court 1 Round: 25 Ground: Clay
| Iasi, Romania | 2021/07/12 08:00 | Bogdan Bobrov v Dan Alexandru Tomescu | 2-6,3-6 |
| Iasi, Romania | 2021/07/11 09:30 | Dan Alexandru Tomescu v Perchicot, Mathieu | 6-3,6-4 |
| ITF M15 Genova | 2021/06/14 07:00 | Meis, Pascal v Dan Alexandru Tomescu | 7-5,6-4 |
| ITF - M15 Antalya | 2021/06/02 09:15 | Dan Alexandru Tomescu v Matteo Gigante | 6-7,2-6 |
| ITF - M15 Bucarest | 2021/05/25 16:00 | Perchicot, Mathieu v Dan Alexandru Tomescu | 6-3,7-6 |
| UTR Pro Tennis Series Bucharest | 2021/05/22 09:35 | Stefan Palosi v Dan Alexandru Tomescu | 2-6,5-7 |
| UTR Pro Tennis Series Bucharest | 2021/05/21 17:00 | Botezan, George v Dan Alexandru Tomescu | 6-4,6-2 |
| UTR Pro Tennis Series Bucharest | 2021/05/21 10:00 | Vlad Andrei Dancu v Dan Alexandru Tomescu | 4-6,5-7 |
| Challenger Salzburg | 2021/07/05 09:00 | Jiri Lehecka v Filip Cristian Jianu | 7-5,6-4 |
| Challenger Salzburg | 2021/07/04 08:00 | Zekic, Miljan v Filip Cristian Jianu | 6-7,3-6 |
| Eastbourne, Great Britain | 2021/06/19 14:20 | Filip Cristian Jianu v James Duckworth | 4-6,3-6 |
| Challenger Almaty | 2021/06/16 06:00 | Riccardo Bonadio v Filip Cristian Jianu | 6-1,7-6 |
| Challenger Almaty | 2021/06/15 04:00 | Tung-Lin Wu v Filip Cristian Jianu | 4-6,5-7 |
| Challenger Almaty | 2021/06/14 04:00 | Filip Cristian Jianu v Vladyslav Orlov | 6-7,1-6 |
| Challenger Almaty Qual | 2021/06/13 08:00 | Filip Cristian Jianu v Ozernoy, Danil | 6-2,6-1 |
| Challenger Almaty | 2021/06/10 05:30 | Filip Cristian Jianu v Dmitry Popko | 5-7,3-6 |