Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Castellon | 2023/10/15 08:30 | Hernando J E Isnardi v Sergio Callejon Hernando | 6-2,6-2 |
| ITF M15 Vigo | 2023/10/11 07:30 | Carlos Gimeno Valero v Sergio Callejon Hernando | 6-1,6-2 |
| ITF M15 Vigo | 2023/10/10 07:30 | Sergio Callejon Hernando v David Naharro | 6-3,6-2 |
| ITF M15 Vigo | 2023/10/09 07:30 | Sergio Callejon Hernando v Joan Busoms Puig | 6-0,6-0 |
| ITF M25 Sabadell | 2023/09/25 07:30 | Jordi Mas De Ugarte v Sergio Callejon Hernando | 7-6,6-1 |
| ITF M25 Sabadell | 2023/09/24 07:30 | Joan Busoms Puig v Sergio Callejon Hernando | 1-6,4-6 |
| ITF M25 Madrid | 2023/09/12 12:05 | Miguel Damas v Sergio Callejon Hernando | 7-6,6-4 |
| ITF M15 Madrid | 2023/09/06 13:15 | Sergio Callejon Hernando v Felix Gill | 2-6,2-6 |
| ITF M25 Manacor | 2022/01/11 10:30 | Nils Pottbecker v Natan D'Hulst | 0-6,6-7 |