Thomas Shimada defeated Patrick Erhardt 6-0 6-3 in the Portugal 3 Masters 1 qualifying round on clay. The upset overturned the form book — Patrick Erhardt came in leading the head-to-head 1–0. Thomas Shimada claimed a first win over Patrick Erhardt in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-05-03 | Portugal 3 Masters 3 | R32 | clay | Patrick Erhardt | 6-4 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.