Diego Hartfield defeated Federico Cardinali 3-6 6-3 6-2 in the Peru F2 round of 32 on clay. The upset overturned the form book — Federico Cardinali came in leading the head-to-head 1–0, but Diego Hartfield had been the form player, winning 4 of their last 10 on clay. Diego Hartfield claimed a first win over Federico Cardinali in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-10-08 | Paraguay F1 | R16 | clay | Federico Cardinali | 6-1 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.