Stadium: Court 18 Round: 54 Ground: Clay
| Davis Cup | 2021/07/03 15:40 | Justin Roberts v Blaise Bicknell | 6-2,3-6,4-6 |
| Davis Cup | 2021/07/02 16:30 | Wilfredo Gonzalez v Justin Roberts | 2-6,3-6 |
| Davis Cup | 2021/06/30 16:30 | Maikiel Ponte Suarez v Justin Roberts | 4-6,4-6 |
| ITF M25 Santo Domingo | 2021/06/08 15:05 | Justin Roberts v Evan Zhu | 6-4,3-6,4-6 |
| ITF M25 Santo Domingo | 2021/06/01 12:50 | Justin Roberts v Davide Pontoglio | 4-6,1-6 |
| ITF M25 Santo Domingo | 2021/05/31 13:00 | Justin Roberts v Juan Sebastian Osorio | 6-3,7-6 |
| ITF M15 Tbilisi | 2021/05/21 06:00 | Alessandro Bega v Justin Roberts | 6-4,6-2 |
| ITF M15 Tbilisi | 2021/05/20 06:00 | Sarp Agabigun v Justin Roberts | 4-6,6-2,6-7 |
| ITF M15 Jerusalem | 2021/05/10 07:00 | Karlo Cubelic v Stefan Simeunovic | 6-1,6-1 |
| ITF M15 Ramat Hasharon | 2021/05/02 07:00 | Stefan Simeunovic v Roee Benya | 3-6,4-6 |