Stadium: Court 3 Round: 44 Ground: Clay
| ITF - M25 Santa Margherita | 2023/10/02 10:40 | Goncalo Oliveira v Pietro Pampanin | 2-6,6-2,6-3 |
| ITF - M25 Santa Margherita | 2023/09/24 08:00 | Nicolas Parizzia v Pietro Pampanin | 7-6,3-6,10-8 |
| ITF M25 Pozzuoli | 2023/09/12 11:00 | Pietro Pampanin v Niccolo Catini | 6-4,2-6,3-6 |
| ITF M25 Pozzuoli | 2023/09/11 10:35 | Pietro Pampanin v Pasquale De Giorgio | 6-2,7-6 |
| ITF M25 Pozzuoli | 2023/09/10 11:25 | Pietro Pampanin v Teo Masera | 6-7,7-5,10-4 |
| ITF M15 Forli | 2023/08/27 13:00 | Pietro Pampanin v Mascarini, Riccardo | 1-6,6-7 |
| ITF M25 Lesa | 2023/08/21 11:00 | Pietro Pampanin v Nicolo Pozzani | 7-5,0-6,6-10 |
| ITF M15 Xativa | 2023/07/30 15:00 | Pietro Pampanin v Francisco Oliveira | 6-0,3-6,10-8 |
| ITF - M15 Porec | 2021/03/07 11:30 | Borna Devald v Onken, Julian | 7-5,6-2 |
| German Championship | 2020/12/07 15:00 | Weindl, Michael v Onken, Julian | 6-2,5-2 |
| Irpin, Singles Qualifying M-ITF-UKR-04A | 2019/08/12 07:00 | Onken, Julian v Karpovets, Igor | 6-3,4-6,5-10 |
| ITF M15 Eupen | 2019/08/06 08:00 | Daniel De Jonge v Onken, Julian | 6-2,7-6 |
| ITF M15 Eupen | 2019/08/05 09:00 | Onken, Julian v Wakita, Shunsuke | 6-0,6-2 |
| ITF Germany F16 | 2018/10/23 10:30 | Leopold Zima v Onken, Julian | 4-6,6-3,6-2 |
| ITF Belgium F9 | 2018/08/21 12:30 | Onken, Julian v Herman, Louis | 4-6,6-3,2-6 |
| ITF Germany F9 | 2018/07/22 16:30 | Onken, Julian v Maik Steiner | 2-6,6-2,4-6 |