| UTR Pro Tennis Series California | 2021/05/26 18:24 | Humberto Lopez v Nathan Oppenheim | 6-1,7-5 |
| UTR Pro Tennis Series California | 2021/05/23 16:30 | Nathan Oppenheim v Hiroki Sakagawa | 1-6,1-6 |
| UTR Pro Tennis Series Cancun | 2021/04/10 17:30 | Clemens Graute v Nathan Oppenheim | 6-4,5-7,6-3 |
| UTR Pro Tennis Series Cancun | 2021/04/08 14:30 | Nathan Oppenheim v Jose Antonio Rodriguez Rodriguez | 6-3,6-2 |
| UTR Pro Tennis Series Cancun | 2021/04/07 19:00 | Nathan Oppenheim v Juan A H Serrano | 0-6,0-6 |
| UTR Pro Tennis Series Cancun | 2021/04/06 17:00 | Nathan Oppenheim v Manuel S Montemayor | 2-6,2-6 |
| UTR Pro Tennis Series Cancun | 2021/04/05 16:00 | Nathan Oppenheim v Jean-Baptiste Badon | 4-6,4-6 |
| UTR Pro Tennis Series Cancun | 2020/11/22 14:00 | Luis Humberto Lopez v Rafael De Alba | 6-7,6-4,6-2 |
| UTR Pro Tennis Series Cancun | 2020/11/21 14:00 | Juan Ignacio Batalla v Rafael De Alba | 5-7,0-1 |
| UTR Pro Tennis Series Cancun | 2020/11/20 15:30 | Eric Samuelsson v Rafael De Alba | 6-7,2-5 |
| UTR Pro Tennis Series Cancun | 2020/11/19 14:00 | Manuel Sanchez v Rafael De Alba | 6-1,6-3 |
| UTR Pro Tennis Series Cancun | 2020/11/16 17:00 | Rafael De Alba v Alejandro H Franco | 3-6,2-6 |
| Challenger Leon Qual | 2018/04/21 23:00 | Rafael De Alba v Marcus Willis | 4-6,3-6 |
| Challenger Leon Qual | 2017/03/26 17:25 | Roberto Cid Subervi v Rafael De Alba | 6-0,6-0 |