Stadium: Court 22 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Villena | 2024/02/28 10:30 | Kuang Qing Xu v Sergio Callejon Hernando | 1-6,3-6 |
| ITF - M15 Villena | 2024/02/27 10:30 | Kuzey Cekirge v Sergio Callejon Hernando | 6-4,2-6,8-10 |
| ITF - M15 Villena | 2024/02/26 15:00 | Albert Pedrico Kravtsov v Sergio Callejon Hernando | 2-6,4-6 |
| ITF - M15 Villena | 2024/02/25 13:00 | Alvaro Peiro Serrano v Sergio Callejon Hernando | 1-6,1-6 |
| ITF - M15 Villena | 2024/02/20 11:20 | Adria Soriano Barrera v Sergio Callejon Hernando | 6-3,2-6,6-4 |
| ITF - M25 Vila Real de Santo Antonio | 2024/02/16 09:30 | Alberto Barroso Campos v Sergio Callejon Hernando | 7-5,6-1 |
| ITF - M25 Vila Real de Santo Antonio | 2024/02/14 14:30 | Gabriele Piraino v Sergio Callejon Hernando | 3-6,2-6 |
| ITF - M25 Vila Real de Santo Antonio | 2024/02/14 09:30 | Sergio Callejon Hernando v Jeremy Taylor | 6-4,6-3 |
| ITF - M15 Villena | 2024/02/21 10:55 | Fajing Sun v Diego F Flores | 5-7,2-6 |
| Challenger - Nonthaburi | 2024/01/08 04:30 | Nick Hardt v Fajing Sun | 7-5,6-4 |
| Challenger - Nonthaburi | 2024/01/07 07:00 | Fajing Sun v Eric Vanshelboim | 6-0,7-5 |
| Challenger Yokkaichi | 2023/11/26 04:10 | Fajing Sun v Ji Sung Nam | 3-6,2-6 |
| Challenger - Yokohama | 2023/11/19 05:25 | Fajing Sun v Yunseong Chung | 4-6,4-6 |
| Challenger - Shenzhen | 2023/10/16 07:05 | Fajing Sun v Alibek Kachmazov | 3-6,6-7 |
| Challenger - Shenzhen | 2023/10/10 05:00 | Fajing Sun v Egor Gerasimov | 3-6,4-6 |
| Challenger - Shenzhen | 2023/10/09 12:30 | Fajing Sun v Chukang Wang | 6-2,6-2 |