Stadium: Court 15 Round: 25 Ground: Hardcourt outdoor
| ITF - Roehampton M25 | 2023/08/09 12:30 | Johannus Monday v William Jansen | 5-7,2-6 |
| ITF - Roehampton M25 | 2023/08/01 11:55 | William Jansen v Luke Simkiss | 3-6,6-1,5-7 |
| ITF - Roehampton M25 | 2023/07/19 10:50 | William Jansen v Daniel Cox | 7-6,4-6,5-7 |
| ITF - Roehampton M25 | 2023/07/18 10:00 | William Jansen v Johannes Ingildsen | 6-2,7-5 |
| ITF - Nottingham M25 | 2023/07/12 09:50 | Billy Blaydes v William Jansen | 7-6,6-4 |
| ITF - Sharm El Sheikh M15 | 2022/12/08 10:10 | William Jansen v Samuel Vincent Ruggeri | 6-7,6-1,6-7 |
| ITF - Sharm El Sheikh M15 | 2022/12/07 13:05 | Michael Bassem Sobhy v William Jansen | 3-6,6-3,2-6 |
| ITF - Madryt M15 | 2022/11/24 09:35 | William Jansen v Adolfo Daniel Vallejo | 6-7,4-6 |
| Challenger Cary | 2023/09/11 19:10 | Thai-Son Kwiatkowski v Keegan Smith | 7-6,6-4 |
| Challenger Cary | 2023/09/10 15:00 | Thai-Son Kwiatkowski v Jibril Nettles | 6-4,6-2 |
| ATP Winston-Salem | 2023/08/21 23:25 | Luca Van Assche v Thai-Son Kwiatkowski | 3-6,6-3,6-2 |
| ATP Winston-Salem | 2023/08/20 17:00 | Thai-Son Kwiatkowski v Andrey Kuznetsov | 6-1,6-0 |
| ATP Winston-Salem | 2023/08/19 18:15 | Nick Hardt v Thai-Son Kwiatkowski | 6-7,3-6 |
| Challenger Winnipeg | 2023/08/16 18:50 | Jack Draper v Thai-Son Kwiatkowski | 6-4,7-6 |
| Challenger Winnipeg | 2023/08/15 17:30 | Thai-Son Kwiatkowski v Chris Rodesch | 6-0,6-2 |
| ATP Toronto | 2023/08/05 16:25 | Christopher O'Connell v Thai-Son Kwiatkowski | 6-2,2-6,6-4 |