Stadium: Court N1 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Fayetteville | 2021/11/03 14:30 | Grassi Mazzuchi, Juan Pablo v Alexandre Reco | 4-6,4-6 |
| UTR Pro Tennis Series Texas | 2021/09/26 13:00 | Grassi Mazzuchi, Juan Pablo v Rollins, Pierce | 6-3,5-4 |
| UTR Pro Tennis Series Texas | 2021/09/25 17:30 | Grassi Mazzuchi, Juan Pablo v Perego, Giulio | 6-1,5-2 |
| UTR Pro Tennis Series Texas | 2021/09/24 16:00 | Grassi Mazzuchi, Juan Pablo v George Goldhoff | 6-0,6-3 |
| UTR Pro Tennis Series Texas | 2021/09/22 13:00 | Grassi Mazzuchi, Juan Pablo v Perot, Raphael | 6-2,5-2 |
| UTR Pro Tennis Series Texas | 2021/09/21 14:30 | Grassi Mazzuchi, Juan Pablo v Lah, Sven | 6-3,4-6,5-4 |
| UTR Pro Tennis Series Texas | 2021/09/20 13:00 | Abbrat, Austin v Grassi Mazzuchi, Juan Pablo | 4-6,5-6 |
| UTR Pro Tennis Series Florida | 2021/06/01 13:00 | Jonah Braswell v Grassi Mazzuchi, Juan Pablo | 7-6,6-4 |
| ITF M15 Fayetteville | 2021/09/22 22:00 | Bucan, Aleksa v Gabi Adrian Boitan | 2-6,6-7 |
| ITF M25 Belgrade | 2021/06/27 11:00 | Daniel Cukierman v Bucan, Aleksa | 6-2,6-1 |
| ITF M15 Skopje | 2021/06/06 12:00 | Bucan, Aleksa v Pjevcevic, Petar | 4-6,3-6 |
| Fayetteville, AR, Singles Qualifying, M-ITF-USA-31 | 2020/11/02 17:30 | Bucan, Aleksa v Blaise Bicknell | 3-6,4-6 |
| ITF M15 Belgrade | 2019/07/02 08:55 | Bucan, Aleksa v Rajic, Dusan | 4-6,6-2,4-10 |
| ITF - M15 Brcko | 2019/05/20 08:00 | Bucan, Aleksa v Daniil Glinka | 6-7,1-6 |
| ITF Germany F14 | 2018/09/30 11:30 | Bucan, Aleksa v Erdbories, Tillmann | 6-4,1-6,4-6 |
| ITF Serbia F4 | 2018/08/30 09:00 | Bucan, Aleksa v Pospisil, Jaroslav | 3-6,1-6 |