Stefano Cobolli defeated Diego Hartfield 6-4 0-6 6-1 in the Italy 8 4 qualifying round on hard. The upset overturned the form book — Diego Hartfield came in leading the head-to-head 1–0. Stefano Cobolli claimed a first win over Diego Hartfield in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-06-23 | Italy 3 3 | F | clay | Diego Hartfield | 6-7(4) 6-0 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.