Stadium: Hard 21 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/05/25 06:30 | Mattia Bellucci v William Griffith | 5-7,2-6 |
| ITF M15 Heraklion | 2021/05/24 06:30 | Christos Keisidis v William Griffith | 2-6,3-6 |
| ITF M15 Heraklion | 2021/05/23 08:30 | Jimmy Yang v William Griffith | 2-6,0-6 |
| ITF M15 Heraklion | 2021/05/18 08:00 | William Griffith v Artur Soghoyan | 4-6,6-1,7-10 |
| ITF M15 Heraklion | 2021/05/17 08:00 | William Griffith v Lorenzo Joaquin Rodriguez | 6-4,1-6,10-6 |
| UTR Pro Pro Tennis Tennis Series Atlanta | 2021/04/18 14:30 | William Griffith v Alexis Gurmendi | 6-4,6-3 |
| UTR Pro Pro Tennis Tennis Series Atlanta | 2021/04/17 12:30 | William Griffith v Murphy Cassone | 6-7,6-3,5-3 |
| UTR Pro Pro Tennis Tennis Series Atlanta | 2021/04/16 12:30 | Jonny Ho v William Griffith | 2-6,4-5 |
| ITF M15 Heraklion | 2021/05/18 08:00 | Yuki Mochizuki v Ze Zhang | 2-6,3-6 |
| ITF M25 Nonthaburi | 2020/02/05 06:20 | Benjamin Bonzi v Yuki Mochizuki | 6-4,3-6,6-4 |
| ITF M25 Nonthaburi | 2020/02/04 02:30 | Yuki Mochizuki v Maxence Broville | 6-2,6-0 |
| ITF M25 Nonthaburi | 2020/02/03 02:30 | Yuki Mochizuki v Patorn Hanchaikul | 7-5,7-6 |
| ITF M25 Nonthaburi | 2020/02/02 03:40 | Yuki Mochizuki v Keisuke Saitoh | 6-3,6-0 |
| ITF M25 Nonthaburi | 2020/01/29 06:15 | Yuki Mochizuki v Shintaro Imai | 4-6,2-6 |
| ITF M25 Nonthaburi | 2020/01/28 02:30 | Yuki Mochizuki v Manish Sureshkumar | 0-6,6-2,10-7 |
| ITF M25 Nonthaburi | 2020/01/27 03:50 | Yuki Mochizuki v Pawin Jirapoomdaje | 6-3,7-6 |