Stadium: Court 10 Round: 62 Ground: Clay
| ITF M15 Frederiksberg | 2021/08/01 10:00 | Carl Emil Overbeck v Jonas Maier | 6-2,6-3 |
| UTR Pro Tennis Series - Nevada | 2021/06/24 16:30 | Nick Lagaev v Jonas Maier | 6-4,5-2 |
| UTR Pro Tennis Series - Nevada | 2021/06/23 18:00 | Mac Kiger v Jonas Maier | 6-3,6-7,4-6 |
| UTR Pro Tennis Series - Nevada | 2021/06/21 15:00 | Bjorn Swenson v Jonas Maier | 6-4,6-4 |
| ITF M15 Kouvola | 2021/05/26 13:30 | Jonas Maier v Joao Victor C Loureiro | 4-6,3-6 |
| ITF M15 Kouvola | 2021/05/25 09:10 | Jonas Maier v Oskar Stumpf | 6-3,6-0 |
| ITF M15 Troisdorf | 2021/05/11 11:05 | Jonas Maier v Timo Stodder | 2-6,1-6 |
| ITF M15 Troisdorf | 2021/05/10 11:00 | Buvaysar Gadamauri v Jonas Maier | 5-7,6-4,4-10 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/02 08:00 | Yujiro Onuma v Piotr Pawlak | 3-6,6-3,10-6 |
| Polish National Tour | 2021/07/10 09:30 | Piotr Pawlak v Dominik Nazaruk | 3-6,4-6 |
| ITF M15 Poprad | 2021/07/04 08:00 | Illya Beloborodko v Piotr Pawlak | 6-0,6-7,10-6 |
| ITF M25 Vratislav | 2021/06/27 15:30 | Ignacio Monzon v Piotr Pawlak | 1-6,6-4,10-5 |
| ITF M15 Novomoskovsk | 2021/05/31 13:45 | Alexander Zgirovsky v Piotr Pawlak | 6-3,6-1 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Piotr Pawlak v Martin Dimitrov | 4-6,6-4,10-6 |
| ITF M15 Šymkent | 2021/04/13 07:35 | Aleksandr Braynin v Piotr Pawlak | 7-5,6-3 |
| ITF M15 Šymkent | 2021/04/12 06:40 | Piotr Pawlak v Danil Ozernoy | 6-1,7-6 |