Sergio Gaoni defeated Dejan Petrovic 0-6 6-3 6-0 in the Australia 1 Masters 2 round of 32 on clay. The upset overturned the form book — Dejan Petrovic came in leading the head-to-head 3–0. Sergio Gaoni claimed a first win over Dejan Petrovic in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-11-20 | Australia F3 | R16 | grass | Dejan Petrovic | 6-4 6-4 |
| 1999-11-01 | Australia F2 | R16 | clay | Dejan Petrovic | 6-1 7-6 |
| 1999-09-19 | Australia 3 Masters 4 | R16 | hard | Dejan Petrovic | 7-5 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.