Stadium: Center Court Round: 14 Ground: Clay
| Challenger Barcelona | 2024/04/01 09:25 | Felix Gill v Ignacio Buse | 3-6,6-3,2-6 |
| Challenger Girona | 2024/03/27 11:05 | Joao Sousa v Felix Gill | 7-6,4-6,6-4 |
| Challenger Girona | 2024/03/24 09:00 | Calvin Hemery v Felix Gill | 6-3,2-6,3-6 |
| Challenger Murcia | 2024/03/17 14:25 | Felix Gill v Nicola Kuhn | 6-2,2-6,3-6 |
| Challenger New Delhi | 2024/02/26 04:30 | Moez Echargui v Felix Gill | 6-2,3-6,7-5 |
| Challenger New Delhi | 2024/02/25 04:30 | Ryuki Matsuda v Felix Gill | 0-6,7-5,3-6 |
| Challenger Pune | 2024/02/21 08:50 | Mukund Sasikumar v Felix Gill | 6-1,6-0 |
| Challenger Pune | 2024/02/20 04:30 | Coleman Wong v Felix Gill | 6-7,6-4,3-6 |
| Challenger Zadar | 2024/03/17 15:30 | Sandro Kopp v Josip Simundza | 6-1,6-2 |
| ITF - Rovinj M15 | 2024/03/13 09:00 | Luka Pavlovic v Josip Simundza | 6-4,6-4 |
| ITF - Porec M15 | 2024/03/06 10:00 | Tommaso Compagnucci v Josip Simundza | 6-2,6-3 |
| ITF - Manacor M15 | 2024/01/21 10:00 | Dominique Graf v Josip Simundza | 3-6,6-1,11-9 |
| ITF - Manacor M15 | 2024/01/16 11:15 | Kane Bonsach Ganley v Josip Simundza | 6-4,6-4 |
| ITF - Manacor M15 | 2024/01/15 11:30 | Markus Malaszszak v Josip Simundza | 3-6,4-6 |
| ITF - Manacor M15 | 2024/01/14 16:00 | Aydan Gomez Osorio v Josip Simundza | 4-6,6-3,5-10 |
| ITF - Antalya M25 | 2023/11/21 06:25 | Sergei Pogosian v Josip Simundza | 7-5,6-3 |