| Challenger Modena | 06/29 08:00 | 14 |
[500] Aristotelis Thanos
v
Ryan Nijboer [424] 
|
6-4,6-2 | |
| Challenger Sassuolo | 06/17 11:00 | 25 |
[437] Ryan Nijboer v
Dusan Lajovic
[137] 
|
3-6,2-6 | |
| Challenger Sassuolo | 06/16 10:25 | 19 |
Lorenzo Bocchi
v
Ryan Nijboer
|
4-6,2-6 | |
| Challenger Sassuolo | 06/15 13:00 | 14 |
[434] Ryan Nijboer v
Gianluca Mager
[423] 
|
Retired | |
| ITF M25 Mataro | 05/22 09:30 | - |
[461] Miguel Damas
v
Ryan Nijboer [432]
|
6-4,6-0 | |
| ITF M25 Mataro | 05/21 08:35 | - |
Imanol L Morillo
v
Ryan Nijboer
|
4-6,6-1,4-6 | |
| Challenger Oeiras | 05/13 13:05 | 25 |
[408] Ryan Nijboer v
Thiago Agustin Tirante
[133] 
|
6-2,2-6,1-6 | |
| Challenger Oeiras | 05/12 13:05 | 19 |
[408] Ryan Nijboer v
KoVe
[395] 
|
7-6,6-4 | |
| Challenger Oeiras | 05/11 15:30 | 14 |
Ryan Nijboer v
Bekhan Atlangeriev
|
6-1,6-3 | |
| ITF M25 Santa Margherita | 05/08 09:30 | - |
[496] Leo Borg
v
Ryan Nijboer [408]
|
6-3,6-1 | |
| ITF M25 Santa Margherita | 05/07 08:00 | - |
Michele Ribecai
v
Ryan Nijboer
|
4-6,2-6 | |
| ITF M25 Santa Margherita | 05/06 10:27 | - |
[243] Ryuki Matsuda
v
Ryan Nijboer [408]
|
2-6,0-6 | |
| ITF M25 Sabadell | 04/30 08:00 | - |
[397] Ryan Nijboer v
Marvin Moeller
[487] |
3-6,6-6 | |
| ITF M15 Antalya | 04/26 07:30 | - |
Ryan Nijboer v
Alex Molcan
|
4-6,3-6 | |
| ITF M15 Antalya | 04/25 07:30 | - |
Ryan Nijboer v
John Sperle
|
6-2,6-2 | |
| ITF M15 Antalya | 04/24 09:45 | - |
Ryan Nijboer v
Valentin Vanta
|
6-3,7-6 | |
| ITF M15 Antalya | 04/19 08:30 | - |
[475] Oleksii Krutykh
v
Ryan Nijboer [395]
|
6-2,6-0 | |
| ITF M15 Antalya | 04/18 07:00 | - |
[486] Marvin Moeller
v
Ryan Nijboer [395]
|
6-7,3-6 | |
| ITF M15 Antalya | 04/17 08:30 | - |
Marcel Zielinski
v
Ryan Nijboer
|
4-6,4-6 | |
| ITF M15 Antalya | 04/16 09:54 | - |
Mert Aytekin
v
Ryan Nijboer
|
0-6,2-6 | |
| Challenger Madrid | 04/07 11:20 | 19 |
[250] Zsombor Piros
v
Ryan Nijboer [399]
|
7-6,6-2 | |
| Challenger Madrid | 04/06 13:45 | 14 |
[394] Ryan Nijboer v
Nicolas Alvarez Varona
[312] |
3-6,7-6,7-6 | |
| Challenger Menorca | 03/31 14:30 | 19 |
[292] Kimmer Coppejans
v
Ryan Nijboer [394]
|
7-5,6-1 | |
| Challenger Menorca | 03/31 10:45 | 14 |
[135] Daniel Cukierman
v
Ryan Nijboer [394]
|
0-6,6-7 | |
| ITF M25 Tarragona | 03/25 12:57 | - |
[384] Sandro Kopp
v
Ryan Nijboer [402]
|
6-2,6-3 | |
| ITF M25 Badalona | 03/18 12:56 | - |
[402] Ryan Nijboer v
Alex M Pujolras
[336] 
|
4-6,7-6,5-7 | |
| ITF M15 Antalya | 03/15 07:30 | - |
Ryan Nijboer v
Stefan A Andreescu
|
2-6,0-6 | |
| ITF M15 Antalya | 03/14 09:30 | - |
Ryan Nijboer v
Gabriel Ghetu
|
7-5,6-3 | |
| ITF M15 Antalya | 03/13 09:30 | - |
Ryan Nijboer v
Francesco Forti
|
6-3,4-1 | |
| ITF M15 Antalya | 03/12 11:27 | - |
Ryan Nijboer v
Nikita Mashtakov
|
6-2,6-1 |