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 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 Qual | 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 |