Round: 26 Ground: Clay
| ITF Italy F12 | 2017/05/10 09:35 | Enrico Dalla Valle v Giovanni Fonio | 6-2,6-7,4-6 |
| ITF Greece F5 | 2017/04/05 10:00 | Andres Artunedo Martinavarr v Giovanni Fonio | 6-0,6-1 |
| ITF Greece F5 | 2017/04/03 06:30 | Giovanni Fonio v Samuel Bothwell | 7-5,6-3 |
| ITF Italy F5 | 2017/03/20 11:30 | Marco Cecchinato v Giovanni Fonio | 6-2,6-0 |
| ITF Italy F4 Qual | 2017/03/12 09:00 | Ilija Vucic v Giovanni Fonio | 2-6,6-3,6-0 |
| ITF Italy F4 Qual | 2017/03/11 08:30 | Giovanni Fonio v Andres Gabriel Ciurletti | 6-4,6-2 |
| ITF Portugal F2 | 2017/03/04 13:00 | Harri Heliovaara v Giovanni Fonio | 6-3,7-5 |
| ITF Portugal F1 | 2017/03/02 10:30 | Giovanni Fonio v Viktor Durasovic | 2-6,2-6 |
| ITF Italy F12 | 2017/05/10 10:00 | Vasile Antonescu v Nils Langer | 2-6,6-2,3-6 |
| ITF France F10 | 2017/05/04 09:45 | Nils Langer v Louis Tessa | 7-5,6-2 |
| ITF France F10 | 2017/05/02 15:50 | Nils Langer v Alen Avidzba | 6-7,6-4,6-2 |
| Challenger Leon Qual | 2017/03/28 22:50 | Adrian Menendez-Maceiras v Nils Langer | 6-1,7-6 |
| Challenger Leon Qual | 2017/03/27 20:00 | Nils Langer v Andrea Arnaboldi | 7-5,6-3 |
| Challenger Leon Qual | 2017/03/26 17:15 | Nils Langer v Luis Patino | 4-6,6-4,6-1 |
| Challenger Guadalajara Qual | 2017/03/19 16:00 | Roberto Cid Subervi v Nils Langer | 7-5,6-1 |
| ITF Italy F2 | 2017/02/28 10:00 | Nils Langer v Matthias Bachinger | 4-6,0-6 |