Stadium: Hard 17 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2023/10/15 07:00 | Stefan Cizelj-Zivkovic v Graham Maassen | 3-6,3-6 |
| ITF M15 Lakewood | 2023/07/03 17:00 | Dominique Rolland v Graham Maassen | 6-4,6-2 |
| ITF M15 South Bend | 2023/06/19 14:00 | Muzammil Murtaza v Graham Maassen | 7-6,7-5 |
| ITF M15 Tabasco | 2023/05/23 19:30 | Christopher Bulus v Graham Maassen | 6-0,6-2 |
| ITF M15 Tabasco | 2023/05/22 16:00 | Alexey Shtengelov v Graham Maassen | 3-6,3-6 |
| ITF M15 Tabasco | 2023/05/21 19:00 | Ricardo Reyna v Graham Maassen | 2-6,6-3,6-10 |
| ITF M25 Xalapa | 2023/05/15 19:30 | Juan Sebastian Osorio v Graham Maassen | 6-0,6-3 |
| ITF M25 Xalapa | 2023/05/14 17:00 | Tobias Sonne v Graham Maassen | 6-4,4-6,10-12 |
| ITF M15 Monastir | 2023/10/09 08:00 | Jack Loge v Ki Lung NG | 6-2,6-3 |
| ITF M15 Monastir | 2023/10/08 08:00 | Ki Lung NG v Matei Cristian Onofrei | 3-6,6-2,10-2 |
| ITF M15 Monastir | 2023/10/01 10:00 | Ki Lung NG v Nazim Makhlouf | 6-4,6-3 |
| Davis Cup | 2023/09/17 08:15 | Ki Lung NG v Daniels Tens | 7-5,6-2 |
| ITF M25 Hong Kong | 2023/09/07 06:20 | Blake Mott v Ki Lung NG | 6-2,6-2 |
| ITF M25 Hong Kong | 2023/09/06 02:00 | Ki Lung NG v Tsung-Hao Huang | 6-4,7-5 |
| ITF M25 Hong Kong | 2023/08/29 03:40 | Ki Lung NG v Takuya Kumasaka | 6-4,0-6,1-6 |
| ITF M25 Jakarta | 2023/08/16 03:30 | Ki Lung NG v Blake Mott | 2-6,2-6 |