Stadium: Centre Court Round: 25 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 France F10 | 2018/06/19 11:10 | Pascal Meis v Fabrizio Ornago | 3-6,7-6,6-2 |
| ITF Italy F14 | 2018/06/13 10:40 | Peter Heller v Pascal Meis | 7-5,6-0 |
| ITF Italy F14 | 2018/06/11 09:00 | Paul Woerner v Pascal Meis | 2-6,7-6,4-6 |
| ITF Italy F13 | 2018/06/06 14:55 | Johan Nikles v Pascal Meis | 6-0,6-4 |
| ITF Hungary F3 | 2018/05/24 08:30 | Pascal Meis v Bogdan Bobrov | 6-1,7-6 |
| ITF Hungary F3 | 2018/05/23 11:00 | Pascal Meis v Toby Martin | 6-1,6-4 |
| ITF Hungary F3 | 2018/05/22 08:00 | Pascal Meis v Levente Godry | 6-2,6-3 |
| ITF Poland F3 | 2018/05/16 08:00 | Pascal Meis v Pavel Nejedly | 0-6,7-5,4-6 |