| Challenger Nur-Sultan | 2021/07/19 08:55 | Mirza Basic v Akira Santillan | 6-2,6-2 |
| Challenger Nur-Sultan | 2021/07/13 05:35 | Akira Santillan v Andrey Kuznetsov | 4-6,3-6 |
| ITF M25 Belgrade | 2021/07/02 09:30 | Quentin Folliot v Akira Santillan | 3-6,2-6 |
| ITF M25 Belgrade | 2021/07/01 12:00 | Fabian Marozsan v Akira Santillan | 6-3,1-6,4-6 |
| ITF M25 Belgrade | 2021/06/30 08:45 | Nikola Slavic v Akira Santillan | 1-6,1-6 |
| ATP Belgrade | 2021/05/22 13:00 | Andrej Martin v Akira Santillan | 6-3,6-3 |
| Challenger Zagreb | 2021/05/09 13:50 | Akira Santillan v Tatsuma Ito | 4-6,3-6 |
| Challenger Split | 2021/04/05 08:30 | Akira Santillan v Miljan Zekic | 2-6,6-3,6-4 |
| UTR Pro Tennis Series Adelaide | 2021/05/26 02:30 | Edward Winter v Calum Puttergill | 6-2,4-6,5-4 |
| UTR Pro Tennis Series Adelaide | 2021/05/23 23:30 | Calum Puttergill v Scott Jones | 4-6,6-7 |
| UTR Pro Tennis Series Canberra | 2021/04/25 00:00 | Aaron Addison v Calum Puttergill | 7-6,6-7,5-3 |
| UTR Pro Tennis Series Canberra | 2021/04/24 03:00 | Casey Hoole v Calum Puttergill | 3-6,7-5,1-6 |
| UTR Pro Tennis Series Canberra | 2021/04/23 00:00 | Calum Puttergill v Jeremy Beale | 6-0,1-6,3-5 |
| UTR Pro Tennis Series Canberra | 2021/04/22 01:30 | Calum Puttergill v Shuannon Tricerri | 6-4,6-3 |
| UTR Pro Tennis Series Canberra | 2021/04/21 03:00 | Alexander Crnokrak v Calum Puttergill | 4-6,0-1 |
| UTR Pro Tennis Series Canberra | 2021/04/20 03:30 | Dane Sweeny v Calum Puttergill | 3-6,6-1,6-4 |