Stadium: Court 11 Round: 14 Ground: Clay
| ITF M25 Wroclaw | 2021/07/01 08:50 | Kodat, Toby Alex v Daniel Michalski | 6-7,6-4,6-0 |
| ITF M25 Wroclaw | 2021/06/30 09:30 | Szic, Sandro v Daniel Michalski | 1-6,2-6 |
| Challenger Almaty Qual | 2021/06/13 07:40 | Jesper De Jong v Daniel Michalski | 6-2,6-1 |
| Challenger Almaty | 2021/06/06 04:00 | Daniel Michalski v Corentin Denolly | 6-3,6-7,2-6 |
| ITF M25 Most | 2021/05/28 08:30 | Daniel Michalski v Alex Rybakov | 4-6,4-6 |
| ITF M25 Most | 2021/05/27 10:45 | Ergi Kirkin v Daniel Michalski | 4-6,0-6 |
| ITF M25 Most | 2021/05/26 11:10 | Cervinka, Petr v Daniel Michalski | 1-6,1-6 |
| ITF - M15 Antalya | 2021/05/14 07:00 | Orlando Luz v Daniel Michalski | 6-3,6-4 |
| Tulsa, Singles Main, M-ITF-USA-16A | 2021/06/16 16:30 | Adrian Andreev v Gonzalo Villanueva | 6-2,3-6,4-6 |
| Orlando, USA | 2021/06/07 14:00 | Adrian Andreev v Stefan Kozlov | 6-4,4-6,4-6 |
| Orlando, USA | 2021/06/06 16:10 | Adrian Andreev v Gonzalo Villanueva | 3-6,6-3,7-6 |
| ITF - M25 Pensacola | 2021/05/23 17:00 | Nicolas Kicker v Adrian Andreev | 6-7,6-3,6-2 |
| ITF - M25 Pensacola | 2021/05/22 16:00 | Aidan Mchugh v Adrian Andreev | 4-6,3-6 |
| ITF - M25 Pensacola | 2021/05/21 14:25 | Adrian Andreev v Oliver Crawford | 6-2,6-3 |
| ITF - M25 Pensacola | 2021/05/20 14:25 | Adrian Andreev v Kelly, Dayne | 6-2,6-2 |
| ITF - M25 Pensacola | 2021/05/19 16:30 | Adrian Andreev v Barrientos, Nicolas | 6-4,6-2 |