Stadium: Court 9 Round: 44 Ground: Clay
| ITF Belgium F1 Qual | 2018/06/17 11:00 | Alex Knaff v Daniel De Jonge | 3-6,3-6 |
| Davis Cup | 2018/04/08 10:30 | Alex Knaff v Vazha Shubladze | 6-1,6-2 |
| ITF USA F40 | 2017/12/07 16:00 | Alex Knaff v Jacob Dunbar | 2-6,4-6 |
| ITF USA F40 | 2017/12/06 20:30 | Austin Krajicek v Alex Knaff | 6-4,1-6,4-6 |
| ITF USA F37 | 2017/11/14 16:00 | Alex Knaff v Fabrizio Ornago | 1-6,5-7 |
| ITF USA F37 | 2017/11/12 17:30 | Juan I Cabrera v Alex Knaff | 1-6,7-5,6-7 |
| ITF Belgium F8 Qual | 2017/08/07 10:40 | Nikolas Walterscheid-Tukic v Alex Knaff | 6-4,6-3 |
| ITF Belgium F8 Qual | 2017/08/06 08:00 | Raphael Calzi v Alex Knaff | 2-6,0-6 |
| ITF Belgium F2 Qual | 2018/06/23 15:25 | Marcel Marlon Sudzum v Ian O'Jon | 6-2,6-4 |
| ITF Czech Republic F2 | 2018/05/23 11:40 | Marcel Marlon Sudzum v Robin Stanek | 2-6,5-7 |
| ITF Czech Republic F2 Qual | 2018/05/21 11:30 | Yvo Panak v Marcel Marlon Sudzum | 3-6,4-6 |
| ITF Czech Republic F2 Qual | 2018/05/20 10:00 | Marcel Marlon Sudzum v David Juras | 6-1,6-3 |
| ITF Hungary F2 Qual | 2018/05/13 08:00 | Toby Martin v Marcel Marlon Sudzum | 6-1,6-1 |
| ITF Italy F5 Qual | 2018/03/26 08:30 | Marcel Marlon Sudzum v Federico Juan Aguilar | 4-6,4-6 |
| ITF Italy F4 Qual | 2018/03/17 13:00 | Enrique Lopez-Perez v Marcel Marlon Sudzum | 6-4,6-0 |
| ITF Italy F3 Qual | 2018/03/12 12:00 | Sergio Martos Gornes v Marcel Marlon Sudzum | 6-2,6-1 |