Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | Tournament | Surface | Opponent in the Final | Score |
| --- | --- | --- | --- | --- |
| April 20, 1997 | Tokyo, Japan | Hard | Amy Frazier | 4–6, 6–4, 6–4 |
| January 11, 1998 | Gold Coast , Australia | Hard | María Vento-Kabchi | 7–5, 6–0 |
| April 19, 1998 | Tokyo, Japan | Hard | Corina Morariu | 6–3, 6–3 |
| March 2, 2003 | Scottsdale , USA | Hard | Kim Clijsters | 3–6, 7–5, 6–4 |
| October 26, 2003 | Linz , Austria | Hard | Nadia Petrova | 7–5, 6–4 |
| January 10, 2004 | Gold Coast, Australia | Hard | Nadia Petrova | 1–6, 6–1, 6–4 |
Question:
Final that has a Date of january 10, 2004 had what opponent?
Answer:
Nadia Petrova