Stadium: Court 2 Round: 25 Ground: Clay
| UTR Pro Zadar | 2023/04/01 12:30 | Josip Simundza v Tim Heger | 6-3,5-4 |
| UTR Pro Zadar | 2023/03/30 06:00 | Oleg Prihodko v Josip Simundza | 6-2,7-5 |
| UTR Pro Zadar | 2023/03/28 08:57 | Andre Biro v Josip Simundza | 6-2,6-3 |
| UTR Pro Zadar | 2023/03/27 08:58 | Josip Simundza v Duje Ajdukovic | 6-2,2-6,2-6 |
| ITF M25 Opatija | 2023/03/19 13:30 | Josip Simundza v Gian M Di Natale | 3-6,2-6 |
| ITF M15 Rovinj | 2023/03/14 10:15 | Paul Woerner v Josip Simundza | 6-2,3-6,10-7 |
| ITF M15 Rovinj | 2023/03/13 10:30 | Josip Simundza v Twan Van Zijl | 6-3,6-3 |
| ITF M15 Rovinj | 2023/03/12 12:00 | Josip Simundza v Jaka Protic Zakelj | 6-0,6-1 |
| ITF M15 Heraklion | 2023/03/21 11:25 | Simon A Ivanov v Yuichiro Inui | 5-7,3-6 |
| ITF M15 Heraklion | 2023/03/16 10:45 | Simon A Ivanov v Aleksi Lofman | 3-6,6-1,6-7 |
| ITF M15 Heraklion | 2023/03/14 09:55 | Simon A Ivanov v Yuichiro Inui | 6-1,6-4 |
| ITF M15 Antalya | 2023/03/08 11:40 | Arthur Reymond v Simon A Ivanov | 6-2,6-4 |
| ITF M25 Torello | 2023/02/28 10:40 | Daniel Merida Aguilar v Simon A Ivanov | 2-6,6-4,6-2 |
| ITF M15 Monastir | 2023/01/24 10:20 | Simon A Ivanov v Ilia Simakin | 2-6,0-6 |
| ITF M15 Monastir | 2023/01/17 08:30 | Bekkhan Atlangeriev v Simon A Ivanov | 7-6,6-0 |
| ITF M15 Monastir | 2023/01/10 08:30 | Lilian Marmousez v Simon A Ivanov | 6-0,6-3 |