Cecil Mamiit defeated Zak Blanchard 5-7 6-3 6-1 in the USA F6 round of 32 on hard. The result followed the form book — Cecil Mamiit came in leading the head-to-head 1–0. Cecil Mamiit extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-06-15 | USA F5 | R64 | hard | Cecil Mamiit | 6-3 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.