Stadium: Court 6 Round: 25 Ground: Clay
| Challenger Tallahassee | 2021/04/23 17:35 | Bjorn Fratangelo v Thai-Son Kwiatkowski | 7-5,6-4 |
| Challenger Tallahassee | 2021/04/22 19:30 | Thai-Son Kwiatkowski v Jason Jung | 6-3,6-2 |
| Challenger Tallahassee | 2021/04/20 16:45 | Thai-Son Kwiatkowski v Mitchell Krueger | 3-6,7-6,6-3 |
| Challenger Orlando | 2021/04/13 16:05 | Thai-Son Kwiatkowski v Altug Celikbilek | 2-6,3-6 |
| ATP Miami | 2021/03/22 17:10 | Thai-Son Kwiatkowski v Alejandro Tabilo | 3-6,4-6 |
| Challenger Cleveland | 2021/03/15 23:05 | Thai-Son Kwiatkowski v Bjorn Fratangelo | 4-6,2-6 |
| ATP Singapore | 2021/02/24 04:00 | Soonwoo Kwon v Thai-Son Kwiatkowski | 4-6,6-3,6-4 |
| ATP Singapore | 2021/02/21 04:00 | Thai-Son Kwiatkowski v Robert Galloway | 6-2,6-3 |
| Cseh Extraliga | 2020/12/14 10:40 | Robin Stanek v Filip Duda | 7-5,6-1 |
| Cseh Extraliga | 2020/12/13 11:20 | Filip Duda v Michael Vrbensky | 4-6,3-6 |
| ITF M25 Pardubice | 2020/09/27 10:30 | Filip Duda v Pol Martin Tiffon | 2-6,4-6 |
| ITF M25 Jablonec Nad Nisou | 2020/09/21 09:15 | Johan Nikles v Filip Duda | 4-6,6-2,10-6 |
| ITF M25 Jablonec Nad Nisou | 2020/09/20 08:15 | Alexander Wolfschmidt v Filip Duda | 1-6,3-6 |
| ITF M25 Prague | 2020/09/13 09:00 | Filip Duda v Dalibor Svrcina | 2-6,1-6 |
| ITF M15 Sharm El Sheikh | 2020/03/11 13:50 | Syed Mohd Agil Syed Naguib v Filip Duda | 2-6,2-6 |
| ITF M15 Trnava | 2020/02/26 10:50 | Filip Duda v Petr Michnev | 4-6,3-6 |