Stadium: Centre Court Round: 44 Ground: Clay
| 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 Morocco F3 | 2017/07/30 09:30 | Hugo Daubias v Alex Knaff | 6-3,6-1 |
| ITF Belgium F1 Qual | 2018/06/16 08:00 | Daniel De Jonge v Paul Barretto | 6-3,6-4 |
| ITF Greece F5 | 2018/03/24 10:00 | Robert Strombachs v Daniel De Jonge | 6-3,6-4 |
| ITF Greece F4 | 2018/03/18 09:30 | Daniel De Jonge v Conor Berg | 1-6,4-6 |
| ITF Greece F4 | 2018/03/17 08:00 | Pietro Miki v Daniel De Jonge | 0-6,2-6 |
| ITF Germany F15 | 2017/10/15 07:00 | Daniel De Jonge v Alexander Kuerschner | 4-6,4-6 |
| ITF Germany F14 | 2017/10/09 10:00 | Osman Torski v Daniel De Jonge | 6-3,6-2 |
| ITF Germany F14 | 2017/10/08 11:30 | Daniel De Jonge v Jessy Kalambay | 7-6,6-4 |
| ITF Belgium F11 | 2017/08/26 10:30 | Daniel De Jonge v Anton Chekhov | 3-6,0-6 |