Stadium: Court 3 Round: 25 Ground: Hardcourt indoor
| ITF USA F33 | 2018/11/21 17:50 | Paul Oosterbaan v Pavel Krainik | 4-6,3-6 |
| ITF USA F33 | 2018/11/20 17:40 | Diego Hidalgo v Paul Oosterbaan | 6-7,7-5,3-6 |
| ITF USA F31 | 2018/11/14 15:00 | Ferran Calvo Eman v Paul Oosterbaan | 6-1,5-7,6-3 |
| ITF Vietnam F5 | 2018/10/30 03:00 | Roman Safiullin v Paul Oosterbaan | 6-3,7-5 |
| ITF Vietnam F4 | 2018/10/26 02:30 | Nam Hoang Ly v Paul Oosterbaan | 6-1,6-4 |
| ITF Vietnam F4 | 2018/10/25 04:25 | Paul Oosterbaan v Jayesh Pungliya | 6-4,6-0 |
| ITF USA F26 | 2018/09/28 18:50 | Paul Oosterbaan v Strong Kirchheimer | 2-6,3-6 |
| ITF USA F26 | 2018/09/27 18:45 | Paul Oosterbaan v Trent Bryde | 6-3,6-2 |
| ITF USA F32 | 2018/11/15 16:00 | Alex Knaff v Ricardo Rodriguez-Pace | 2-6,2-6 |
| ITF Belgium F8 | 2018/08/15 09:30 | Germain Gigounon v Alex Knaff | 6-0,6-2 |
| ITF Belgium F8 | 2018/08/14 09:00 | Guillaume Dermiens v Alex Knaff | 1-6,4-6 |
| ITF Germany F11 | 2018/08/08 10:00 | Alex Knaff v Evan Furness | 0-6,7-5,3-6 |
| ITF Germany F11 | 2018/08/07 09:00 | Marco Neubau v Alex Knaff | 4-6,7-5,3-6 |
| ITF Belgium F6 | 2018/08/03 13:05 | Maxime Chazal v Alex Knaff | 6-1,6-1 |
| ITF Belgium F6 | 2018/08/02 09:00 | Jorge Panta v Alex Knaff | 3-6,1-6 |
| ITF Belgium F6 | 2018/07/31 12:25 | Alex Knaff v Maxime Pauwels | 7-5,7-6 |