Daniel Vacek defeated David Prinosil 6-4 6-1 in the Tokyo quarter-final on hard. The result followed the form book — Daniel Vacek came in leading the head-to-head 2–0, defending last year's round of 64. Daniel Vacek extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-11-03 | Moscow | R32 | hard | Daniel Vacek | 6-0 6-2 |
| 1997-08-11 | New Haven | R64 | hard | Daniel Vacek | 6-2 6-4 |
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 (139 vs 165). ATP, WTA & Challenger.