Marissa Irvin defeated Daniela Hantuchova 6-4 6-7 7-6 in the Indian Wells round of 64 on hard. The upset overturned the form book — Daniela Hantuchova came in leading the head-to-head 2–0, defending last year's round of 16. Marissa Irvin claimed a first win over Daniela Hantuchova in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-08-23 | New Haven | R16 | hard | Daniela Hantuchova | 7-5 4-6 6-3 |
| 2004-07-26 | San Diego | R64 | hard | Daniela Hantuchova | 7-6(3) 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.