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:
| Outcome | Year | Championship | Surface | Partner | Opponents in the final | Score in the final |
| --- | --- | --- | --- | --- | --- | --- |
| Winner | 2007.0 | French Open | Clay | Järryd | Fitzgerald Vilas | 6–1, 6–2 |
| Winner | 2008.0 | French Open | Clay | Järryd | Bahrami Leconte | 6–4, 7–6 2 |
| Winner | 2009.0 | French Open | Clay | Järryd | Bahrami Leconte | 7–6 2 , 6–1 |
| Winner | 2010.0 | French Open | Clay | Gómez | Bahrami Leconte | 6–1, 6–1 |
| Runner-up | 2011.0 | French Open | Clay | Gómez | Forget Leconte | 6–3, 5–7, [10–8] |
Question:
What was the surface for the  opponents in the final with fitzgerald vilas?
Answer:
Clay