Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 - Manacor | 2024/01/09 10:00 | Sergio Callejon Hernando v Manas Manoj Dhamne | 6-4,6-3 |
| ITF - M15 - Manacor | 2024/01/08 10:30 | Sergio Callejon Hernando v Nils Pottbecker | 6-0,6-0 |
| 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 - Esch/Alzette | 2024/01/02 10:00 | Alex Rybakov v Nikolay Vylegzhanin | 4-6,6-1,5-7 |
| Challenger Champaign | 2023/11/16 17:00 | Mitchell Krueger v Alex Rybakov | 7-6,6-1 |
| Challenger Champaign | 2023/11/14 20:00 | Chris Rodesch v Alex Rybakov | 7-5,4-6,4-6 |
| Challenger Champaign | 2023/11/13 17:50 | Murphy Cassone v Alex Rybakov | 4-6,6-7 |
| Challenger Champaign | 2023/11/12 21:10 | Joshua Sheehy v Alex Rybakov | 3-6,4-6 |
| Challenger Knoxville | 2023/11/06 17:35 | Sebastian Fanselow v Alex Rybakov | 6-7,6-4,6-4 |
| Challenger Knoxville | 2023/11/05 19:25 | Alex Rybakov v Nathan Ponwith | 6-4,6-4 |
| Challenger Charlottesville | 2023/10/29 21:35 | Alex Rybakov v Inaki Montes-De La Torre | 2-6,3-6 |