Round: 25 Ground: Clay
| ITF Italy F33 | 2014/09/27 08:00 | Omar Giacalone v Gianluca Mager | 2-6,6-2,7-5 |
| ITF Italy F20 | 2017/07/05 11:10 | Omar Giacalone v Filippo Leonardi | 7-5,2-6,3-6 |
| ITF Italy F20 | 2017/07/04 08:00 | Omar Giacalone v Guido Marson | 6-3,6-2 |
| Challenger Milan Qual | 2017/06/24 08:30 | Jaroslav Pospisil v Omar Giacalone | 6-2,6-1 |
| Challenger Todi Qual | 2017/06/17 13:35 | Andreas Haider-Maurer v Omar Giacalone | 6-3,6-4 |
| ITF Tunisia F22 | 2017/06/07 09:30 | Manuel Guinard v Omar Giacalone | 7-5,6-7,6-1 |
| Challenger Francavilla | 2017/04/25 11:30 | Ruben Ramirez-Hidalgo v Omar Giacalone | 3-6,7-6,6-3 |
| Challenger Francavilla Qual | 2017/04/24 09:00 | Petr Michnev v Omar Giacalone | 2-6,1-6 |
| Challenger Francavilla Qual | 2017/04/23 09:00 | Omar Giacalone v Aslan Karatsev | 4-6,6-4,6-3 |
| Challenger Recanati | 2017/07/03 19:50 | Gianluca Mager v Egor Gerasimov | 6-7,4-6 |
| Challenger Milan | 2017/06/30 11:25 | Guido Pella v Gianluca Mager | 6-1,6-1 |
| Challenger Milan | 2017/06/28 12:35 | Gianluca Mager v Blaz Rola | 6-4,6-7,6-0 |
| Challenger Milan | 2017/06/26 15:00 | Gianluca Mager v Laurent Lokoli | 3-6,7-5,6-3 |
| Challenger Todi | 2017/06/19 15:55 | Gianluca Mager v Salvatore Caruso | 4-6,6-7 |
| Challenger Caltanissetta | 2017/06/13 14:35 | Gianluca Mager v Mikhail Kukushkin | 4-6,0-6 |
| Challenger Vicenza | 2017/05/31 09:00 | Jan Satral v Gianluca Mager | 6-4,6-4 |
| Challenger Vicenza | 2017/05/29 10:30 | Maximo Gonzalez v Gianluca Mager | 6-7,4-6 |