Stadium: Court 6 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Austin | 2021/11/16 17:00 | Kareem Allaf v Petro Orlando Fellin | 6-4,6-2 |
| ITF M15 Ithaca | 2021/10/06 13:00 | Kyle Seelig v Petro Orlando Fellin | 6-1,7-5 |
| ITF M15 Ithaca | 2021/10/05 13:00 | Petro Orlando Fellin v Ishaan Ravichander | 1-6,6-4,10-4 |
| ITF M25 Caslano | 2021/08/25 08:30 | Leandro Riedi v Petro Orlando Fellin | 7-6,6-2 |
| ITF M25 Caslano | 2021/08/24 07:25 | Joao Riquelme v Petro Orlando Fellin | 4-6,1-6 |
| ITF M25 Caslano | 2021/08/23 09:30 | Gabriele Datei v Petro Orlando Fellin | 1-6,7-6,2-10 |
| ITF M25 Ueberlingen | 2021/08/17 09:20 | Petro Orlando Fellin v Florian Broska | 6-4,1-6,8-10 |
| ITF M15 Parnu | 2021/08/04 12:30 | Michal Mikula v Petro Orlando Fellin | 6-2,6-0 |
| UTR Pro Tennis Series California | 2021/12/05 19:00 | Daniel De Jonge v Giacomo Revelli | 6-3,6-4 |
| UTR Pro Tennis Series California | 2021/12/04 20:15 | Daniel De Jonge v Alex Kuperstein | 6-0,7-6 |
| UTR Pro Tennis Series California | 2021/12/03 21:30 | Daniel De Jonge v Warren Wood | 6-3,3-6,7-6 |
| UTR Pro Tennis Series California | 2021/12/01 19:25 | Daniel De Jonge v Yassine Smiej | 6-1,6-4 |
| UTR Pro Tennis Series California | 2021/11/30 20:30 | Daniel De Jonge v Rithvik Krishna | 6-4,6-4 |
| UTR Pro Tennis Series California | 2021/11/29 16:00 | Christopher Papa v Daniel De Jonge | 1-6,3-6 |
| ITF M25 Calabasas | 2021/10/28 21:40 | Rinky Hijikata v Daniel De Jonge | 6-4,4-6,6-2 |
| ITF M25 Calabasas | 2021/10/27 00:10 | Daniel De Jonge v Arthur Fery | 6-4,3-6,6-1 |