James Blake defeated Stefan Koubek 6-4 3-6 7-6 6-1 in the US Open round of 32 on hard. James Blake extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-02-08 | Davis Cup WG R1: AUT vs USA | RR | clay | James Blake | 5-7 7-5 6-2 6-2 |
| 2002-01-14 | Australian Open | R64 | hard | Stefan Koubek | 4-6 2-6 6-4 6-1 6-2 |
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 (200 vs 82). ATP, WTA & Challenger.