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 | Score |
| --- | --- | --- | --- | --- |
| 10 August 1998 | San Marino | Clay | Mariano Puerta | 6–2, 7–5 |
| 26 April 1999 | Prague , Czech Republic | Clay | Sláva Doseděl | 6–2, 6–2 |
| 8 January 2001 | Auckland , New Zealand | Hard | Francisco Clavet | 6–4, 2–6, 6–3 |
| 5 January 2004 | Adelaide , Australia | Hard | Michaël Llodra | 6–4, 6–0 |
| 12 January 2004 | Auckland, New Zealand | Hard | Rafael Nadal | 4–6, 6–2, 7–5 |
| 23 February 2004 | Marseille , France | Hard (i) | Robin Söderling | 4–6, 6–4, 6–4 |
Question:
On what Date was Rafael Nadal the Opponent?
Answer:
12 January 2004