David Lomicky defeated Steve Herdoiza 6-3 6-3 in the Canada Masters 4 qualifying round on carpet. The upset overturned the form book — Steve Herdoiza came in leading the head-to-head 1–0. David Lomicky claimed a first win over Steve Herdoiza in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1992-10-12 | Canada Masters 1 | R32 | carpet | Steve Herdoiza | 6-4 6-4 |