Tom Vanhoudt defeated Thomas Buchmayer 6-3 0-6 7-6 in the Croatia Masters 3 round of 32 on clay. The upset overturned the form book — Thomas Buchmayer came in leading the head-to-head 1–0. Tom Vanhoudt claimed a first win over Thomas Buchmayer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-03-30 | Caribbean 1 Masters 3 | R16 | clay | Thomas Buchmayer | 6-3 6-1 |