Andrej Martin defeated Federico Delbonis 6-2 6-1 in the Lima CH round of 32 on clay. The upset overturned the form book — Federico Delbonis came in leading the head-to-head 2–0, but Andrej Martin had been the form player, winning 7 of their last 10 on clay. Andrej Martin claimed a first win over Federico Delbonis in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-03-08 | Santiago | R16 | clay | Federico Delbonis | 6-0 6-3 |
| 2020-11-02 | Paris Masters | Q1 | hard | Federico Delbonis | 7-6(5) 3-6 7-6(1) |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.