Stadium: Court T13 Round: 62 Ground: Clay
| ITF M25 Madrid | 2023/09/10 15:00 | Josip Simundza v Rodrigo Mora Clement | 6-2,6-4 |
| ITF M15 Budapest | 2023/09/06 10:00 | Josip Simundza v Gabriel Decamps | 1-6,4-6 |
| ITF M15 Budapest | 2023/09/04 10:00 | Josip Simundza v Kevin Humpfner | 2-6,3-6 |
| ITF M15 Budapest | 2023/09/03 09:30 | Josip Simundza v Gregor Hausberger | 6-1,5-7,12-10 |
| ITF M25 Osijek | 2023/08/08 11:15 | Dusan Obradovic v Josip Simundza | 6-3,6-4 |
| ITF M15 Celje | 2023/06/27 08:45 | Josip Simundza v Maurus Malgiaritta | 2-6,6-7 |
| ITF M15 Celje | 2023/06/26 09:30 | Michal Novansky v Josip Simundza | 2-6,4-6 |
| ITF M15 Store | 2023/06/20 08:00 | Filip Jeff Planinsek v Josip Simundza | 3-6,6-3,10-8 |
| ITF M25 Madrid | 2023/09/10 15:00 | Amaan Siddiqui v Ivan Marrero Curbelo | 0-6,0-6 |
| ITF M15 Madrid | 2023/09/06 13:40 | Ivan Marrero Curbelo v Pablo Masjuan Ginel | 4-6,0-6 |
| ITF M15 Madrid | 2023/09/05 12:00 | Asier Civera Martinez v Ivan Marrero Curbelo | 3-6,1-6 |
| ITF M15 Madrid | 2023/09/04 10:00 | Adam Krischke v Ivan Marrero Curbelo | 1-6,0-6 |
| ITF M25 Oviedo | 2023/08/30 13:50 | Ivan Marrero Curbelo v Diego A B Sanchez | 3-6,6-3,1-6 |
| ITF M25 Oviedo | 2023/08/29 15:00 | Iago D Alvarez v Ivan Marrero Curbelo | 3-6,2-6 |
| ITF M25 Oviedo | 2023/08/28 09:00 | Pau Bosch Munoz v Ivan Marrero Curbelo | 3-6,4-6 |
| ITF M25 The Hague | 2023/07/06 11:00 | Ivan Marrero Curbelo v Peter Fajta | 6-3,6-3 |