Konstantin Don Gruber defeated Julien Cuaz 6-2 4-6 6-2 in the Switzerland 2 4 qualifying round on clay. The upset overturned the form book — Julien Cuaz came in leading the head-to-head 1–0. Konstantin Don Gruber claimed a first win over Julien Cuaz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2002-08-26 | Switzerland 2 2 | R32 | clay | Julien Cuaz | 6-3 0-6 7-6(3) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.