Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| 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 F26 | 2018/09/25 19:40 | Paul Oosterbaan v Aleksandre Bakshi | 7-5,6-1 |
| ITF USA F25 | 2018/09/20 17:00 | Alan Kohen v Paul Oosterbaan | 2-6,6-1,6-2 |
| ITF USA F25 | 2018/09/19 19:15 | Isaiah Strode v Paul Oosterbaan | 6-7,6-7 |
| ITF USA F24 | 2018/09/13 16:30 | Paul Oosterbaan v Daniel Cukierman | 3-6,0-6 |
| ITF USA F24 | 2018/09/11 16:30 | Paul Oosterbaan v Conor Berg | 6-4,6-3 |
| ITF USA F23 | 2018/08/14 15:35 | Antoine Hoang v Paul Oosterbaan | 6-3,7-6 |
| Challenger Ismaning | 2018/10/13 13:10 | Lukas Ollert v Marek Gengel | 3-6,3-6 |
| ITF Sweden F5 | 2018/10/01 12:00 | Lukas Ollert v David Poljak | 6-4,3-6,2-6 |
| ITF Sweden F4 | 2018/09/25 11:00 | George Loffhagen v Lukas Ollert | 6-1,6-3 |
| ITF Great Britain F5 | 2018/09/18 17:00 | Lukas Ollert v Anton Matusevich | 4-6,5-7 |
| ITF Great Britain F4 | 2018/09/13 11:10 | Lukas Ollert v Jack Draper | 6-2,3-6,4-6 |
| ITF Great Britain F4 | 2018/09/12 10:00 | Lukas Ollert v Samm Butler | 6-2,6-1 |
| ITF Great Britain F4 | 2018/09/11 13:00 | Lukas Ollert v Felix Gill | 6-2,6-0 |
| ITF France F16 | 2018/09/07 13:40 | Corentin Denolly v Lukas Ollert | 6-3,7-5 |