Stadium: Court 2 Round: 54 Ground: Hardcourt indoor
| ITF M15 Ostrava | 2021/11/22 09:00 | Dominik Recek v Sizya Ernest Kivanda | 6-4,6-2 |
| ITF M15 Ostrava | 2021/11/21 11:00 | Vitek Horak v Sizya Ernest Kivanda | 2-6,6-7 |
| ITF M15 Selva Gardena | 2021/10/25 07:00 | Augusto Virgili v Sizya Ernest Kivanda | 4-6,6-3,10-7 |
| ITF M15 Selva Gardena | 2021/10/24 09:20 | Mario Nicosia v Sizya Ernest Kivanda | 6-7,4-6 |
| ITF M25 Prague | 2021/10/04 09:35 | Dominik Kellovsky v Sizya Ernest Kivanda | 6-3,7-5 |
| ITF M25 Prague | 2021/10/03 09:00 | Sizya Ernest Kivanda v Antonin Stepanek | 6-4,6-0 |
| ITF M15 Quinta Do Lago | 2020/11/01 14:00 | Alexander Wolfschmidt v Sizya Ernest Kivanda | 6-4,6-2 |
| ITF M25 Sunderland | 2020/02/23 09:55 | Karl Friberg v Sizya Ernest Kivanda | 7-5,6-2 |
| ITF M15 Sharm El Sheikh | 2021/11/05 08:00 | Illya Beloborodko v Oscar Weightman | 6-3,6-4 |
| ITF M15 Sharm El Sheikh | 2021/11/04 09:55 | Oscar Weightman v Erik Arutiunian | 6-3,7-6 |
| ITF M15 Sharm El Sheikh | 2021/11/03 09:45 | Oscar Weightman v Fares Zakaria | 6-4,6-2 |
| ITF M15 Sharm El Sheikh | 2021/10/27 13:25 | Oscar Weightman v Simone Roncalli | 3-6,4-6 |
| UK Pro League | 2021/10/03 14:00 | Derrick Chen v Oscar Weightman | 6-4,6-4 |
| UK Pro League | 2021/10/01 12:30 | Ewan Moore v Oscar Weightman | 6-3,6-2 |
| UK Pro League | 2021/09/30 11:30 | Oscar Weightman v James Mackinlay | 6-3,6-4 |
| UK Pro League | 2021/09/29 09:30 | Oscar Weightman v David Quayle | 7-6,7-5 |