Renzo Olivo defeated Andrej Martin 7-5 6-1 in the Buenos Aires CH round of 32 on clay. The upset overturned the form book — Andrej Martin came in leading the head-to-head 1–0, defending last year's round of 32. Renzo Olivo claimed a first win over Andrej Martin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-07-19 | Umag | R32 | clay | Andrej Martin | 1-6 6-2 7-6(1) |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.