| UTR Pro Tennis Series California | 2021/11/10 20:30 | Alan Ton v Conrad Brown | 5-7,3-5 |
| UTR Pro Tennis Series California | 2021/11/09 20:30 | Emmanuel Coste v Conrad Brown | 6-3,2-6,1-6 |
| UTR Pro Tennis Series California | 2021/11/08 20:30 | Roman Postolka v Conrad Brown | 6-4,6-2 |
| UTR Pro Tennis Series California | 2021/11/07 16:00 | Jeremy Field v Conrad Brown | 6-4,1-6,5-7 |
| UTR Pro Tennis Series California | 2021/09/01 18:00 | Conrad Brown v Isaiah Strode | 4-6,3-5 |
| UTR Pro Tennis Series California | 2021/08/31 19:30 | Conrad Brown v Lucas Gomez | 2-6,4-5 |
| UTR Pro Tennis Series California | 2021/08/29 20:58 | Conrad Brown v Kris Van Wyk | 4-6,6-4,3-5 |
| UTR Pro Tennis Series California | 2021/08/29 15:00 | Conrad Brown v Ethan Schiffman | 4-6,2-6 |
| UTR Pro Tennis Series California | 2021/11/10 16:00 | Juan Carlos v Zdenek Derkas | 6-1,5-2 |
| UTR Pro Tennis Series California | 2021/11/09 17:30 | Joe Tyler v Zdenek Derkas | 6-7,0-6 |
| UTR Pro Tennis Series California | 2021/11/08 17:30 | Zdenek Derkas v Daniel Traxler | 6-0,6-0 |
| UTR Pro Tennis Series California | 2021/10/11 15:00 | Zdenek Derkas v Kris Van Wyk | 0-0 |
| ITF M25 Most | 2021/05/24 09:00 | Zdenek Derkas v Lucas Bouquet | 1-6,1-6 |
| ITF M25 Most | 2021/05/23 14:00 | Leon Hoeveler v Zdenek Derkas | 4-6,1-6 |
| ITF M25 Poznan | 2020/08/24 11:00 | Filip Kolasinski v Zdenek Derkas | 6-0,6-0 |
| ITF M25 Poznan | 2020/08/23 09:30 | Zdenek Derkas v Piotr Galus | 6-4,6-4 |