Stadium: Campo 2 Round: 19 Ground: Clay
| Challenger - Barletta | 2021/08/22 14:00 | Vladyslav Orlov v Luca Potenza | 4-6,6-4,5-7 |
| ITF - M15 Monastir | 2021/08/08 07:30 | Luca Potenza v Mattia Bellucci | 3-6,3-6 |
| ITF - M15 Monastir | 2021/08/07 07:30 | Luca Potenza v Hady Habib | 1-6,6-3,7-6 |
| ITF - M15 Monastir | 2021/08/06 07:30 | Dougaz, Aziz v Luca Potenza | 6-2,6-7,5-7 |
| ITF - M15 Monastir | 2021/08/05 07:30 | Antonio Massara v Luca Potenza | 6-4,1-6,3-6 |
| ITF - M15 Monastir | 2021/08/01 08:00 | Eliakim Coulibaly v Luca Potenza | 5-7,6-2,6-4 |
| ITF - M15 Monastir | 2021/07/31 07:30 | Luca Potenza v Montsi, Khololwam | 7-5,6-1 |
| ITF - M15 Monastir | 2021/07/30 07:30 | Luca Potenza v Sascha Gueymard Wayenburg | 4-6,6-4,7-6 |
| Challenger - Barletta | 2021/08/22 12:50 | Harrison, Ryan v Alexis Galarneau | 6-4,6-3 |
| ITF M25 Ueberlingen | 2021/08/20 11:30 | Harrison, Ryan v Esteve Lobato, Eduard | 1-6,4-6 |
| ITF M25 Ueberlingen | 2021/08/19 15:05 | Vidal Azorin, Jose Fco v Harrison, Ryan | 2-6,3-6 |
| ITF M25 Ueberlingen | 2021/08/17 15:00 | Mariano Kestelboim v Harrison, Ryan | 3-6,6-4,2-6 |
| Challenger Cary | 2021/07/18 15:00 | Liam Draxl v Harrison, Ryan | 3-6,7-6,6-7 |
| Newport, USA | 2021/07/12 16:00 | Alex Bolt v Harrison, Ryan | 6-0,6-7,7-5 |
| Newport, USA | 2021/07/11 16:45 | Harrison, Ryan v Christopher Eubanks | 7-6,6-7,7-6 |
| Weston, FL, Singles M-ITF-USA-05A | 2021/07/04 15:00 | Harrison, Ryan v Stefan Kozlov | 7-5,3-6,3-6 |