| ITF - M25 - Sabadell | 09/24 07:30 | 62 | Joan Busoms Puig v Sergio Callejon Hernando | 1-6,4-6 | |
| ITF - M25 - Madrid | 09/12 12:05 | 25 | Miguel Damas v Sergio Callejon Hernando | 7-6,6-4 | |
| ITF - M15 - Madrid | 09/06 13:15 | 25 | Sergio Callejon Hernando v Felix Gill | 2-6,2-6 | |
| ITF - M25 - Oviedo | 08/30 14:30 | 26 | Sergio Callejon Hernando v Carlos Gimeno Valero | 1-6,4-6 | |
| ITF - M25 - Oviedo | 08/30 08:30 | 25 | Alvaro Lopez San Martin v Sergio Callejon Hernando | Retired | |
| ITF - M25 - Oviedo | 08/28 17:45 | 54 | Sergio Callejon Hernando v Alejandro T Alvarez | 6-2,6-3 | |
| ITF - M25 - Oviedo | 08/28 10:30 | 54 | Sergio Callejon Hernando v Samuel M Arjona | 6-4,7-5 | |
| ITF - M25 - Santander | 08/23 17:00 | 26 | Ryan Nijboer v Sergio Callejon Hernando | 6-1,7-6 | |
| ITF - M25 - Santander | 08/22 08:00 | 25 | Sergio Callejon Hernando v Iker Urribarrens Ramirez | 6-2,2-6,6-3 | |
| ITF - M25 - Santander | 08/21 09:00 | 54 | Sergio Callejon Hernando v Carlos Guerrero Alvarez | 6-4,6-3 | |
| ITF - M25 - Santander | 08/20 09:00 | 54 | Sergio Callejon Hernando v Jiri Cizek | 6-2,6-4 | |
| ITF - M15 - Xativa | 08/04 16:25 | 27 | Ryan Nijboer v Sergio Callejon Hernando | 6-2,6-3 | |
| ITF - M15 - Xativa | 08/03 15:00 | 26 | Fnu Nidunjianzan v Sergio Callejon Hernando | 3-6,3-6 | |
| ITF - M15 - Xativa | 08/02 20:25 | 25 | Sergio Callejon Hernando v Jorge Martinez Martinez | 6-3,6-1 | |
| ITF - M15 - Xativa | 08/01 08:45 | 62 | Javier Molino v Sergio Callejon Hernando | 7-6,5-7,2-10 | |
| ITF - M15 - Xativa | 07/31 15:00 | 62 | Pablo Alemany v Sergio Callejon Hernando | 4-6,2-6 | |
| ITF - M15 - Xativa | 07/30 15:00 | 62 | Felix Mischker v Sergio Callejon Hernando | 6-7,1-6 | |
| ITF - M25 - Denia | 07/24 09:00 | 62 | Sergio Callejon Hernando v Javier Molino | 5-7,7-6,7-10 | |
| ITF - M25 - Denia | 07/23 08:00 | 62 | Samuel Kyjaci v Sergio Callejon Hernando | 1-6,0-6 | |
| ITF - M25 - Bakio | 06/25 13:40 | 54 | Marc Saura Moragrega v Sergio Callejon Hernando | 6-4,6-4 | |
| ITF - M25 - Córdoba | 06/05 18:00 | 62 | Alejandro Manzanera Pertusa v Sergio Callejon Hernando | 6-3,2-6,10-8 | |
| ITF - M25 - Córdoba | 06/05 08:00 | 62 | Sergio Callejon Hernando v David Munoz | 6-0,3-6,10-7 | |
| ITF - M25 - Córdoba | 06/04 12:30 | 62 | Sergio Callejon Hernando v Rail Ibragimov | 6-0,6-3 | |
| ITF - M15 - Telde | 04/19 08:00 | 25 | Sergio Callejon Hernando v Martin Cuevas | 7-5,3-6,4-6 | |
| ITF - M15 - Telde | 04/17 08:00 | 54 | Luis Francisco v Sergio Callejon Hernando | 4-6,3-6 | |
| ITF - M15 - Telde | 04/16 11:30 | 54 | Noah Lopez Cherubino v Sergio Callejon Hernando | 5-7,3-6 | |
| ITF - M25 - Palmanova | 03/23 10:50 | 26 | Sergio Callejon Hernando v Gianmarco Ferrari | 1-6,2-6 | |
| ITF - M25 - Palmanova | 03/22 10:25 | 25 | Noah Regas Luis v Sergio Callejon Hernando | 7-6,3-6,6-7 | |
| ITF - M25 - Palmanova | 03/21 10:50 | 62 | Carlos Giraldi v Sergio Callejon Hernando | 5-7,6-7 | |
| ITF - M25 - Palmanova | 03/20 12:00 | 62 | Sergio Callejon Hernando v Luis Francisco | 7-5,7-5 |