Robert Kraus defeated Ciprian Petre Porumb 6-4 6-1 in the Israel 1 Masters 1 round of 32 on hard. The upset overturned the form book — Ciprian Petre Porumb came in leading the head-to-head 1–0. Robert Kraus claimed a first win over Ciprian Petre Porumb in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-09-16 | Romania Masters 1 | R32 | clay | Ciprian Petre Porumb | 4-6 6-4 6-3 |