David Caldwell defeated Gianluca Gatto 6-1 6-1 in the Greece 4 Masters 3 semi-final on hard. The upset overturned the form book — Gianluca Gatto came in leading the head-to-head 1–0. David Caldwell claimed a first win over Gianluca Gatto in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-10-25 | Greece 4 Masters 1 | F | hard | Gianluca Gatto | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.