Stadium: Ct 2 Round: 62 Ground: Clay
| Challenger Ilkley Qual | 2018/06/17 15:20 | Schnur, Brayden v Klein, Brydan | 7-6,7-6 |
| Challenger Ilkley Qual | 2018/06/17 11:35 | Klein, Brydan v Stefan Kozlov | 4-6,6-1,7-5 |
| Challenger Nottingham Qual | 2018/06/10 15:00 | Schnur, Brayden v Klein, Brydan | 2-6,6-4,6-4 |
| Challenger Nottingham Qual | 2018/06/09 15:55 | Willis, Marcus v Klein, Brydan | 1-6,3-6 |
| Challenger Surbiton Qual | 2018/06/04 10:00 | Taylor Fritz v Klein, Brydan | 6-3,6-2 |
| Challenger Surbiton Qual | 2018/06/03 10:00 | Klein, Brydan v King, Evan | 6-4,6-3 |
| Challenger Surbiton Qual | 2018/06/02 12:05 | Vishnu Vardhan v Klein, Brydan | 4-6,3-6 |
| Challenger Gimcheon Qual | 2018/05/07 05:00 | Renta Tokuda v Klein, Brydan | 1-6,6-3,6-4 |
| ITF Australia F5 | 2018/09/14 23:00 | Ibrahim, James v Sullivan, Jacob | 6-3,0-6,3-6 |
| ITF Australia F4 Qual | 2018/03/24 23:00 | Holt-Crossman, Erik v Sullivan, Jacob | 6-2,6-3 |
| ITF Australia F3 Qual | 2018/03/18 00:30 | Sullivan, Jacob v Holt-Crossman, Erik | 6-4,3-6,4-6 |
| ITF Australia F2 Qual | 2018/03/05 02:30 | Nkomba, Benard Bruno v Sullivan, Jacob | 6-3,6-1 |
| ITF Australia F2 Qual | 2018/03/04 00:30 | Sullivan, Jacob v Abfalter, David | 6-3,6-3 |
| ITF Australia F2 Qual | 2018/03/02 23:00 | Sullivan, Jacob v Jayden Court | 6-2,5-7,6-4 |
| ITF Australia F1 Qual | 2018/02/25 23:00 | Yu Hsiou Hsu v Sullivan, Jacob | 7-6,7-6 |
| ITF Australia F1 Qual | 2018/02/24 00:00 | Cuc, Danut v Sullivan, Jacob | 4-6,4-6 |