Stadion: Hard 20 Round: 27 Ground: Hardcourt outdoor
| ITF - M15 - Heraklion | 2021/05/27 09:25 | Ze Zhang v Adam Jones | 6-2,6-1 |
| ITF - M15 - Heraklion | 2021/05/26 13:10 | Ze Zhang v Alexandros Skorilas | 6-2,6-1 |
| ITF - M15 - Heraklion | 2021/05/21 06:30 | Yuta Shimizu v Ze Zhang | 6-3,1-6,6-3 |
| ITF - M15 - Heraklion | 2021/05/20 06:30 | Takuto Niki v Ze Zhang | 5-7,3-6 |
| ITF - M15 - Heraklion | 2021/05/18 08:00 | Yuki Mochizuki v Ze Zhang | 2-6,3-6 |
| ITF - M15 - Monastir | 2020/03/11 17:50 | Ze Zhang v Bastien Presuhn | 7-6,6-3 |
| Challenger - Bangkok | 2020/01/15 03:00 | Roman Safiullin v Ze Zhang | 6-2,6-1 |
| Challenger - Bangkok | 2020/01/13 04:35 | Ze Zhang v Goncalo Oliveira | 6-4,6-2 |
| ITF - M15 - Heraklion | 2021/05/27 06:30 | Luke Johnson v Harry Wendelken | 6-2,6-7,6-3 |
| ITF - M15 - Heraklion | 2021/05/25 08:00 | Luke Johnson v Billy Harris | 3-6,7-6,6-1 |
| ITF - M15 - Heraklion | 2021/05/20 06:30 | Luke Johnson v Ryan Peniston | 6-7,3-6 |
| ITF - M15 - Heraklion | 2021/05/19 09:40 | Matthew Dellavedova v Luke Johnson | 5-7,2-6 |
| ITF - M15 - Troisdorf | 2021/05/13 09:00 | Yannick Mertens v Luke Johnson | 7-6,6-4 |
| ITF - M15 - Troisdorf | 2021/05/12 11:55 | Luke Johnson v Nikolas Walterscheid-Tukic | 1-6,6-4,6-4 |
| ITF - M15 - Troisdorf | 2021/05/11 08:00 | Luke Johnson v Gian Luca Tanner | 6-7,7-5,11-9 |
| ITF - M15 - Troisdorf | 2021/05/10 08:00 | Luke Johnson v Caspar Schuetze | 6-2,6-2 |