Stadium: Court 1 Round: 28 Ground: Clay
| ITF - M15 Brcko - Doubles Hommes | 2021/05/22 10:40 | Klier Junior/Joao Lucas Reis da Silva v Biljesko/Heger | 6-7,7-5,10-3 |
| ITF - M15 Brcko - Doubles Hommes | 2021/05/21 16:25 | Klier Junior/Joao Lucas Reis da Silva v Connor/Jovic | 6-2,6-1 |
| ITF M15 Cancun MD | 2020/02/14 18:00 | Lingua Lavallen A L / Ribeiro Marcondes I v Klier Junior/Joao Lucas Reis da Silva | 7-5,7-6 |
| ITF M15 Cancun MD | 2020/02/13 21:45 | Klier Junior/Joao Lucas Reis da Silva v Ribeiro E / Yamacita F | 6-4,6-3 |
| ITF M15 Cancun MD | 2020/02/07 18:00 | Klier Junior/Joao Lucas Reis da Silva v Blancaneaux G / Petit G | 1-6,2-6 |
| ITF M15 Cancun MD | 2020/02/06 18:55 | Comesana F / Lipovsek Puches T v Klier Junior/Joao Lucas Reis da Silva | 7-5,1-6,8-10 |
| ITF M15 Cancun MD | 2020/02/05 19:25 | Klier Junior/Joao Lucas Reis da Silva v Carou I / Estevez M | 3-6,6-4,10-6 |
| ITF - M15 Brcko - Doubles Hommes | 2021/05/22 15:45 | Vanshelboim/Virtanen v Krapivin M / Tamm K | 7-5,7-5 |
| ITF - M15 Brcko - Doubles Hommes | 2021/05/22 15:00 | Vanshelboim/Virtanen v Krapivin M / Tamm K | 7-5,7-5 |