Adrian Voinea defeated Stefan Koubek 3-6 7-5 6-3 6-1 in the Davis Cup G1 QF: ROU vs AUT round robin on carpet. The upset overturned the form book — Stefan Koubek came in leading the head-to-head 3–1. Adrian Voinea narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2002-07-22 | Kitzbuhel | R32 | clay | Stefan Koubek | 6-2 6-3 |
| 2000-06-26 | Wimbledon | R128 | grass | Stefan Koubek | 3-3 RET |
| 1999-09-13 | Bournemouth | F | clay | Adrian Voinea | 1-6 7-5 7-6(2) |
| 1999-08-09 | San Marino | R16 | clay | Stefan Koubek | 6-3 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (63 vs 200). ATP, WTA & Challenger.