David Prinosil defeated Byron Black 6-3 1-6 6-3 in the Washington quarter-final on hard. The upset overturned the form book — Byron Black came in leading the head-to-head 2–1, defending last year's round of 64, but David Prinosil had been the form player, winning 2 of their last 4 on hard. David Prinosil narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-06-18 | Nottingham | R32 | grass | Byron Black | 6-3 6-1 |
| 1996-06-17 | Halle | R32 | grass | Byron Black | 6-3 6-7(5) 6-4 |
| 1995-01-16 | Australian Open | R128 | hard | David Prinosil | 3-6 6-4 6-4 6-2 |
Averages over each player's completed matches in the selected window (75 vs 71). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About