| ITF M15 Sanxenxo | 04/25 06:55 | 26 | Julio Cesar Porras v Sergio Callejon Hernando | Retired | |
| ITF M15 Sanxenxo | 04/23 07:45 | 25 | Oliveira, Francisco v Sergio Callejon Hernando | 0-6,0-6 | |
| Telde, Singles M-ITF-ESP-31A | 04/17 12:05 | 25 | 윈터 로페즈, 벤자민 v Sergio Callejon Hernando | 6-2,7-5 | |
| ITF M25 Tarragona | 03/24 13:00 | 62 | Genov, Anthony v Sergio Callejon Hernando | 4-6,6-3,11-9 | |
| ITF M15 Les Franqueses | 03/14 13:05 | 26 | 바실라시빌리, 니콜로즈 v Sergio Callejon Hernando | 6-4,6-2 | |
| ITF M15 Les Franqueses | 03/13 10:30 | 25 | Mateo Luis Alvarez Sarmiento v Sergio Callejon Hernando | 3-6,2-6 | |
| ITF M15 Villena | 03/01 09:00 | 27 | 타바코, 파우스토 v Sergio Callejon Hernando | 6-1,7-6 | |
| ITF M15 Villena | 02/29 11:20 | 26 | Sergio Callejon Hernando v 순, 파징 | 4-6,7-6,6-1 | |
| ITF M15 Villena | 02/28 10:30 | 25 | Kuang Qing Xu v Sergio Callejon Hernando | 1-6,3-6 | |
| ITF M15 Villena | 02/27 10:30 | 62 | 세키르지, 쿠제이 v Sergio Callejon Hernando | 6-4,2-6,8-10 | |
| ITF M15 Villena | 02/26 15:00 | 62 | Albert Pedrico Kravtsov v Sergio Callejon Hernando | 2-6,4-6 | |
| ITF M15 Villena | 02/25 13:00 | 62 | Alvaro Peiro Serrano v Sergio Callejon Hernando | 1-6,1-6 | |
| ITF M15 Villena | 02/20 11:20 | 25 | Soriano Barrera, Adria v Sergio Callejon Hernando | 6-3,2-6,6-4 | |
| ITF M25 Vila Real de Santo Antonio | 02/16 09:30 | 26 | 바로소 캄포스, 알베르토 v Sergio C Hernando | 7-5,6-1 | |
| ITF M25 Vila Real de Santo Antonio | 02/14 14:30 | 25 | Gabriele Piraino v Sergio C Hernando | 3-6,2-6 | |
| ITF M25 Vila Real de Santo Antonio | 02/14 09:30 | 44 | Sergio C Hernando v Taylor, Jeremy | 6-4,6-3 | |
| ITF M15 Manacor | 01/23 15:00 | 25 | Martin Landaluce v Sergio Callejon Hernando | 7-6,6-2 | |
| ITF M15 Manacor | 01/18 10:00 | 26 | 바서만, 데니 v Sergio Callejon Hernando | 6-3,6-4 | |
| ITF M15 Manacor | 01/17 11:30 | 25 | Sergio Callejon Hernando v Gavrielides, Liam | 3-6,6-2,6-2 | |
| ITF M15 Manacor | 01/16 11:15 | 62 | Sergio Callejon Hernando v Manas Manoj Dhamne | 3-6,7-5,5-10 | |
| ITF M15 Manacor | 01/15 11:30 | 62 | Sergio Callejon Hernando v Artsiom Sinitsyn | 6-4,6-3 | |
| ITF M15 Manacor | 01/14 16:00 | 62 | Sergio Callejon Hernando v Nicholas Miharu Bowles-Rokudo | 6-1,6-0 | |
| ITF M15 Manacor | 01/10 16:25 | 25 | Sergio Callejon Hernando v 리바코프, 알렉스 | 2-6,1-6 | |
| ITF M15 Manacor | 01/09 10:00 | 62 | Sergio Callejon Hernando v Manas Manoj Dhamne | 6-4,6-3 | |
| ITF M15 Manacor | 01/08 10:30 | 62 | Sergio Callejon Hernando v Nils Pottbecker | 6-0,6-0 | |
| Castellon, Singles Qualifying M-ITF-ESP-34A | 10/15 08:30 | 62 | 에스쿠라 이스나디, 헤르난도 조세 v Sergio Callejon Hernando | 6-2,6-2 | |
| Vigo, Singles M-ITF-ESP-21A | 10/11 07:30 | 25 | 기메노 발레로, 카를로스 v Sergio Callejon Hernando | 6-1,6-2 | |
| Vigo, Singles M-ITF-ESP-21A | 10/10 07:30 | 44 | Sergio Callejon Hernando v David Naharro | 6-3,6-2 | |
| Vigo, Singles M-ITF-ESP-21A | 10/09 07:30 | 44 | Sergio Callejon Hernando v Joan Busoms Puig | 6-0,6-0 | |
| ITF M25 Sabadell | 09/25 07:30 | 62 | Mas de Ugarte, Jordi v Sergio Callejon Hernando | 7-6,6-1 |