L. Rivera defeated Scott Duncan 6-2 6-2 in the M15 Palmanova 1 q64 on clay. The upset overturned the form book — Scott Duncan came in leading the head-to-head 1–0. L. Rivera claimed a first win over Scott Duncan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-11-22 | M15 Ostrava 1 | Q16 | hard | Scott Duncan | 3-6 6-4 10-8 |