Lindsay Davenport defeated Naoko Sawamatsu 6-3 6-7 6-1 in the Sydney quarter-final on hard. The result followed the form book — Lindsay Davenport came in leading the head-to-head 2–0. Lindsay Davenport extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-02-03 | Tokyo | R16 | hard | Lindsay Davenport | 6-2 6-2 |
| 1997-07-12 | Fed Cup WG1 PO: USA vs JPN | RR | hard | Lindsay Davenport | 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.