| UTR Pro Tennis Series California | 2021/11/15 19:00 | Takeyasu Sekiguchi v Alexander Stater | 4-6,7-6,3-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/12 14:30 | Takeyasu Sekiguchi v Lazaro Navarro-Batles | 6-1,3-5 |
| UTR Pro Tennis Series Manzanillo | 2021/08/11 16:00 | Takeyasu Sekiguchi v Juan A H Serrano | 4-6,6-3,3-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/10 14:30 | Takeyasu Sekiguchi v Alan Magadan | 3-6,0-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/09 15:00 | Takeyasu Sekiguchi v Marcelo Sepulveda | 4-6,6-3,2-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/07 13:00 | Takeyasu Sekiguchi v Alan Sau Franco | 3-6,3-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/06 13:30 | Takeyasu Sekiguchi v Luis Pineda | 5-7,7-6,6-4 |
| UTR Pro Tennis Series Manzanillo | 2021/08/04 14:30 | Takeyasu Sekiguchi v Eduardo Yahir Orozco Rangel | 6-0,6-2 |
| UTR Pro Tennis Series California | 2021/11/16 00:10 | Dane Esses v Zdenek Derkas | 1-6,1-5 |
| UTR Pro Tennis Series California | 2021/11/14 16:00 | Alex Kuperstein v Zdenek Derkas | 6-3,7-5 |
| UTR Pro Tennis Series California | 2021/11/13 16:00 | Aadarsh Tripathi v Zdenek Derkas | 6-7,2-6 |
| UTR Pro Tennis Series California | 2021/11/12 16:00 | Conrad Brown v Zdenek Derkas | 2-6,3-5 |
| 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 |