Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/06/07 13:30 | Dong Ju Kim v Sungbeen Sim | 6-0,3-6,10-7 |
| ITF M15 Monastir | 2021/06/07 09:00 | Sungbeen Sim v Luc Koenig | 6-3,6-1 |
| ITF M15 Monastir | 2021/06/06 10:00 | Sungbeen Sim v Pierre Antoine Tailleu | 6-3,7-6 |
| ITF M15 Monastir | 2021/05/31 08:00 | Maxence Beauge v Sungbeen Sim | 7-6,6-2 |
| ITF M15 Monastir | 2021/05/24 08:00 | Sungbeen Sim v Mauro De Maio | 6-4,1-6,8-10 |
| ITF M15 Monastir | 2021/05/17 13:30 | Omni Kumar v Sungbeen Sim | 6-4,7-5 |
| ITF M15 Monastir | 2021/05/17 09:00 | Giacomo Revelli v Sungbeen Sim | 4-6,6-2,8-10 |
| ITF M15 Monastir | 2021/05/16 11:00 | Sungbeen Sim v Mihailo Popovic | 6-4,0-6,10-8 |
| ITF M15 Monastir | 2021/06/07 08:00 | Oscar Weightman v Ezequiel Simonit | 4-6,2-6 |
| ITF M15 Monastir | 2021/06/06 09:00 | Oscar Weightman v Luka Vukovic | 6-4,6-3 |
| ITF M15 Kouvola | 2021/05/27 11:00 | Anton Matusevich v Oscar Weightman | 6-0,6-4 |
| ITF M15 Kouvola | 2021/05/26 06:00 | Ville-Petteri Ahti v Oscar Weightman | 2-6,2-6 |
| UK Pro League | 2021/04/11 14:00 | Tom Hands v Oscar Weightman | 4-6,7-5,10-7 |
| UK Pro League | 2021/04/10 09:00 | Alexis Canter v Oscar Weightman | 7-6,6-4 |
| UK Pro League | 2021/04/09 09:00 | Oscar Weightman v Henry Patten | 3-6,4-6 |
| UK Pro League | 2021/04/08 13:00 | Oscar Weightman v Lui Maxted | 1-6,0-6 |