Stadium: Court 2 Round: 25 Ground: Clay
| ITF M15 Cairo | 2021/09/14 08:15 | Gabriel Ciro Da Silva v Muthu A Senthilkumar | 6-2,7-5 |
| ITF M15 Cairo | 2021/09/07 07:30 | Gabriel Ciro Da Silva v Sean Hess | 5-7,5-7 |
| ITF M15 Cairo | 2021/09/06 08:30 | Gabriel Ciro Da Silva v Tommaso Vescovi | 6-1,6-0 |
| ITF M15 Monastir | 2021/08/30 10:00 | Alec Beckley v Gabriel Ciro Da Silva | 6-2,6-3 |
| ITF M15 Monastir | 2021/08/29 09:00 | Andres Haefele v Gabriel Ciro Da Silva | 0-6,6-7 |
| ITF M15 Monastir | 2021/08/24 07:30 | Gabriel Ciro Da Silva v Chanchai Sookton-Eng | 4-6,7-6,7-10 |
| ITF M15 Monastir | 2021/08/23 09:00 | Gabriel Ciro Da Silva v Takuya Kumasaka | 6-7,7-6,10-6 |
| ITF M15 Monastir | 2021/08/22 10:00 | William Griffith v Gabriel Ciro Da Silva | 6-4,6-7,4-10 |
| 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 Oldenzaal | 2021/08/16 10:00 | Zachary Eisinga v Aloys J W Van Baal | 3-6,6-4,10-7 |
| ITF M15 Oldenzaal | 2021/08/15 07:30 | Zachary Eisinga v Flemming Peters | 6-0,6-3 |
| ITF M25 The Hague | 2021/06/27 08:00 | Dax Donders v Zachary Eisinga | 6-2,7-5 |
| ITF M25 Alkmaar | 2021/06/21 14:25 | Guillaume Dermiens v Zachary Eisinga | 4-6,7-5,13-11 |
| ITF M25 Alkmaar | 2021/06/20 12:30 | Lodewijk Weststrate v Zachary Eisinga | 2-6,1-6 |
| ITF M15 Cairo | 2021/05/04 08:00 | Zachary Eisinga v Martin Dimitrov | 1-6,6-7 |