Joao Marcos Nusdeo defeated Oscar Matias Leiva Biason 6-4 6-2 in the M15 Guayaquil 1 q16 on clay. The result followed the form book — Joao Marcos Nusdeo came in leading the head-to-head 1–0. Joao Marcos Nusdeo extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-04-23 | M15 Bucaramanga 1 | Q16 | clay | Joao Marcos Nusdeo | 6-2 7-6(7) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.