Stadium: Court 6 Round: 62 Ground: Clay
| UTR Pro Tennis Series Pazardzhik | 2021/07/13 09:00 | Aristotelis Thanos v Iliyan Radulov | 4-2 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/12 07:30 | Dian Nedev v Aristotelis Thanos | 6-4,5-4 |
| ITF M15 Sofia | 2021/07/07 08:50 | Quentin Folliot v Aristotelis Thanos | 6-3,6-3 |
| ITF M15 Sofia | 2021/07/05 12:00 | Mattia Frinzi v Aristotelis Thanos | 7-5,2-6,7-10 |
| ITF M15 Sofia | 2021/07/05 07:00 | Stefanos Sakellaridis v Aristotelis Thanos | 2-6,6-7 |
| ITF M15 Sofia | 2021/07/04 07:30 | Benjamin Niv v Aristotelis Thanos | 0-6,4-6 |
| ITF M15 Heraklion | 2021/06/10 07:30 | Alexis Musialek v Aristotelis Thanos | 6-4,6-1 |
| ITF M15 Heraklion | 2021/06/09 09:55 | Aristotelis Thanos v Kelsey Stevenson | 6-2,7-5 |
| ITF M25 Wetzlar | 2021/08/02 14:35 | Benito Sanchez Martinez v William Ma | 6-3,1-6,11-9 |
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Benedikt Emesz v William Ma | 6-1,6-0 |
| UTR Pro Tennis Series Canberra | 2021/04/24 00:00 | Omar Jasika v William Ma | 6-3,5-2 |
| UTR Pro Tennis Series Canberra | 2021/04/21 01:30 | William Ma v Li Tu | 2-6,3-6 |
| UTR Pro Tennis Series Canberra | 2021/04/20 01:30 | William Ma v Arjun Mehrotra | 6-3,4-6,7-6 |
| UTR Pro Tennis Series Canberra | 2021/04/19 01:00 | James McCabe v William Ma | 6-3,6-3 |
| UTR Pro Tennis Series Bendigo | 2021/01/31 03:00 | William Ma v Chanchai Sookton-Eng | 1-6,2-5 |
| UTR Pro Tennis Series Bendigo | 2021/01/30 03:00 | Aaron Addison v William Ma | 6-2,5-1 |