Stadium: Court 6 Round: 62 Ground: Hardcourt outdoor
| ITF M15 - Cairo | 2021/09/30 11:45 | Luciano Darderi v Zachary Eisinga | 6-2,6-0 |
| ITF M15 - Cairo | 2021/09/29 08:45 | Zachary Eisinga v Amr Asrawy | 6-0,6-1 |
| ITF M15 - Cairo | 2021/09/23 08:00 | Billy Harris v Zachary Eisinga | 6-1,6-0 |
| ITF M15 - Cairo | 2021/09/22 10:30 | Zachary Eisinga v Muthu A Senthilkumar | 5-7,6-3,6-1 |
| ITF M15 - Cairo | 2021/09/16 11:30 | Simone Roncalli v Zachary Eisinga | 6-3,6-4 |
| ITF M15 - Cairo | 2021/09/15 10:40 | Gabriel Ciro Da Silva v Zachary Eisinga | 7-6,4-6,2-6 |
| ITF M15 - Huy | 2021/08/25 12:50 | Zachary Eisinga v Marvin Netuschil | 4-6,6-7 |
| ITF M15 - Oldenzaal | 2021/08/18 14:10 | Constantin Schmitz v Zachary Eisinga | 6-3,7-6 |
| ITF M15 - Sharm El Sheikh | 2021/10/24 09:30 | Bogdan Seleznev v Dennis Dragomirov | 3-6,6-3,8-10 |
| ITF M15 - Sharm El Sheikh | 2021/10/17 09:30 | Bogdan Seleznev v Pavlos Parson | 4-6,5-7 |
| ITF M15 - Kazan | 2021/10/12 08:55 | Radimir Lutkovskii v Bogdan Seleznev | 6-4,6-3 |
| ITF M15 - Kazan | 2021/10/11 11:10 | Bogdan Seleznev v Klim Kozyrev | 1-6,6-3,10-1 |
| ITF M15 - Shymkent | 2021/05/31 05:00 | Bogdan Seleznev v Saba Purtseladze | 2-6,1-6 |
| ITF M15 - Shymkent | 2021/05/24 05:20 | Antonio Campo v Bogdan Seleznev | 6-0,6-1 |
| ITF M15 - St Petersburg - Kval | 2021/02/07 07:00 | Andrea Guerrieri v Bogdan Seleznev | 6-2,6-1 |
| ITF M15 - St Petersburg | 2021/01/31 09:45 | Bogdan Seleznev v Mikhail Fufygin | 0-6,0-6 |