| UTR Pro Tennis Series Mulheim | 2021/07/30 12:56 | Vasile Antonescu v Francois Musitelli | 6-1,6-4 |
| UTR Pro Tennis Series Mulheim | 2021/07/30 07:00 | Tim Gennes v Vasile Antonescu | 0-6,6-7 |
| UTR Pro Tennis Series Mulheim | 2021/07/29 10:00 | Hendrik Jebens v Vasile Antonescu | 4-6,7-6,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/07/27 11:00 | Marvin Schaber v Vasile Antonescu | 1-6,6-4,2-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/26 12:30 | Vasile Antonescu v John Sperle | 6-3,5-2 |
| UTR Pro Tennis Series Bucharest | 2021/06/04 10:00 | Vasile Antonescu v Marcelo Zormann | 5-7,7-5,2-5 |
| UTR Pro Tennis Series Bucharest | 2021/06/03 09:00 | Mathieu Scaglia v Vasile Antonescu | 2-6,2-6 |
| UTR Pro Tennis Series Bucharest | 2021/06/02 16:00 | Vladimir Filip v Vasile Antonescu | 4-6,0-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/30 13:30 | Guy Den Heijer v Alexander Hoogmartens | 6-2,3-6,4-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/30 07:00 | Francesco Vilardo v Alexander Hoogmartens | 1-6,2-5 |
| UTR Pro Tennis Series Mulheim | 2021/07/29 08:30 | Jim Hendrikx v Alexander Hoogmartens | 4-6,3-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/28 12:30 | Stefan Peter Hampe v Alexander Hoogmartens | 2-6,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/26 08:00 | Hazem Naw v Alexander Hoogmartens | 6-4,5-4 |
| ITF M15 Gaiba | 2021/06/09 16:15 | Alexander Hoogmartens v Federico Bertuccioli | 7-6,2-6,4-6 |
| ITF M15 Antalya | 2021/03/17 09:55 | Miljan Zekic v Alexander Hoogmartens | 5-7,7-5,6-2 |
| ITF M15 Antalya | 2021/03/10 08:40 | Emiliano Maggioli v Alexander Hoogmartens | 7-6,6-3 |