Stadium: Court 7 - Center Round: 44 Ground: Clay
| ITF M15 Sarajevo | 2021/06/02 09:00 | Frane Nincevic v Mathieu Perchicot | 6-2,2-6,4-6 |
| ITF M15 Sibenik | 2021/05/17 08:00 | Nikola Basic v Frane Nincevic | 6-7,6-1,10-8 |
| Challenger Zagreb | 2021/05/09 08:30 | Frane Nincevic v Ramkumar Ramanathan | 4-6,3-6 |
| ITF M15 Sibenik | 2021/04/21 08:00 | Sebastian Prechtel v Frane Nincevic | 6-0,6-3 |
| Challenger Split Qual | 2021/04/11 12:25 | Frane Nincevic v Tristan Lamasine | 1-6,5-7 |
| Challenger Zadar | 2021/03/24 09:00 | Frane Nincevic v Sumit Nagal | 0-6,1-6 |
| Challenger Zadar | 2021/03/22 13:15 | Frane Nincevic v Mili Poljicak | 4-6,6-4,6-3 |
| ITF M15 Rovinj | 2021/03/17 09:00 | Timo Legout v Frane Nincevic | 6-0,7-6 |
| Challenger Biella | 2021/05/02 12:30 | Stefano Reitano v Dimitar Kuzmanov | 6-2,2-6,2-6 |
| ITF M15 Monastir | 2021/03/15 12:30 | Stefano Reitano v Luigi Sorrentino | 4-6,2-6 |
| ITF M15 Monastir | 2021/03/15 08:00 | Stefano Reitano v Youcef Rihane | 3-6,6-3,10-6 |
| ITF M15 Monastir | 2021/03/14 09:00 | Juan Ignacio Galarza v Stefano Reitano | 2-6,2-6 |
| ITF M15 Monastir | 2021/03/07 09:00 | Stefano Reitano v Buvaysar Gadamauri | 5-7,6-4,5-10 |
| ITF M15 Monastir | 2021/03/03 13:20 | Stefano Reitano v Naoki Tajima | 1-6,0-6 |
| ITF M15 Monastir | 2021/03/01 13:00 | Stefano Reitano v Christian Hansen | 7-6,6-2 |
| ITF M15 Monastir | 2021/03/01 09:00 | Stefano Reitano v Leonardo Taddia | 6-1,6-0 |