Agustin Garizzio defeated Jan Weinzierl 6-4 6-3 in the Germany F4 round of 32 on clay. The upset overturned the form book — Jan Weinzierl came in leading the head-to-head 2–0. Agustin Garizzio claimed a first win over Jan Weinzierl in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-08-16 | Belgium F2 | QF | clay | Jan Weinzierl | 6-3 6-0 |
| 1995-10-28 | Uruguay Paraguay Masters 3 | R32 | clay | Jan Weinzierl | 6-1 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.