Sander Groen defeated Daniele Balducci 6-2 6-3 in the Italy 1 Masters 4 round of 32 on carpet. The upset overturned the form book — Daniele Balducci came in leading the head-to-head 1–0. Sander Groen claimed a first win over Daniele Balducci in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-10-14 | Italy 3 Masters 4 | QF | clay | Daniele Balducci | 4-6 6-1 6-4 |