Stadium: Hard 20 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Héraklion | 2021/06/02 06:30 | Cash, Julian v Patael, Ben | 2-6,6-7 |
| ITF - M15 Héraklion | 2021/06/01 06:30 | Paris, Joshua v Cash, Julian | 3-6,4-6 |
| ITF - M15 Tbilisi | 2021/05/20 07:55 | Khan, Zane v Cash, Julian | 7-6,6-4 |
| ITF - M15 Tbilisi | 2021/05/19 08:40 | Aleksandre Bakshi v Cash, Julian | 7-6,5-7,2-6 |
| ITF - M15 Tbilisi | 2021/05/18 05:30 | Cash, Julian v Lorenzo Vatteroni | 6-2,6-3 |
| ITF - M15 Tbilisi | 2021/05/17 05:30 | Cash, Julian v Tavadze, Guga | 4-6,6-4,10-7 |
| ITF M15 Jerusalem | 2021/05/13 08:30 | Khan, Zane v Cash, Julian | 7-6,6-4 |
| ITF M15 Jerusalem | 2021/05/11 06:30 | Montsi, Khololwam v Cash, Julian | 5-7,6-4,5-7 |
| ITF - M15 Héraklion | 2021/06/02 10:15 | Niki, Takuto v Zhang, Ze | 2-6,3-6 |
| ITF - M15 Héraklion | 2021/05/26 10:40 | Niki, Takuto v Federico Arnaboldi | 3-6,4-6 |
| ITF - M15 Héraklion | 2021/05/20 06:30 | Niki, Takuto v Zhang, Ze | 5-7,3-6 |
| ITF - M15 Héraklion | 2021/05/19 09:45 | Niki, Takuto v Mark Whitehouse | 6-3,6-3 |
| ITF - M15 Sharm El Sheikh | 2021/04/07 12:45 | Uzhylovsky, Vladimir v Niki, Takuto | 7-6,3-6,6-4 |
| ITF - M15 Sharm El Sheikh | 2021/04/01 09:25 | Niki, Takuto v Bega, Alessandro | 3-6,3-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/31 12:05 | Niki, Takuto v Fares Zakaria | 6-2,6-4 |
| ITF - M15 Sharm El Sheikh | 2021/03/25 07:30 | Niki, Takuto v Marek Gengel | 1-6,0-6 |