Jan Mertl defeated Tobias Summerer 6-4 6-3 in the Germany F4 semi-final on clay. The upset overturned the form book — Tobias Summerer came in leading the head-to-head 1–0. Jan Mertl claimed a first win over Tobias Summerer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-02-09 | Switzerland 1 2 | F | carpet | Tobias Summerer | 6-1 6-3 |
Averages over each player's completed matches in the selected window (128 vs 9). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About