George Cosac defeated Milko Petkov 6-3 6-3 in the Romania Masters 4 qualifying round on clay. The result followed the form book — George Cosac came in leading the head-to-head 1–0. George Cosac extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-09-16 | Romania Masters 4 | R16 | clay | George Cosac | 6-2 6-0 |