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 |
| --- | --- | --- | --- | --- |
| 2 October 2007 | Sawtell , F6 | Clay | Miles Armstrong | 6–1, 6–3 |
| 4 February 2008 | Mildura , F1 | Grass | Nathan Healey | 6–1, ret. |
| 4 March 2008 | Hamilton , F2 | Hard | Young-Jun Kim | 6–4, 7–5 |
| 16 June 2008 | Minsk , F2 | Hard | Siarhei Betau | 7–6(5), 6–1 |
| 9 February 2009 | Mildura , F1 | Grass | Matthew Ebden | 6–0, 6–4 |
| 11 April 2010 | Little Rock , F9 | Hard | John Millman | 6–3, 3–6, 6–3 |
| 2 May 2010 | Ipswich , F3 | Clay | Jason Kubler | 6–3, 6–4 |
| 9 May 2010 | Bundaberg , F4 | Clay | Dane Propoggia | 7–5, 6–3 |
| 17 October 2011 | Bendigo , F9 | Hard | Benjamin Mitchell | 7–5, 6–3 |
| 17 June 2012 | Tekirdağ , F23 | Hard | Lorenzo Giustino | 6–3, 6–1 |
| 7 July 2012 | Bakio , F19 | Hard | Jules Marie | 6–2, 6–2 |
| 9 September 2012 | Antalya , F34 | Hard | Mohamed Safwat | 2–6, 7–6, 6–1 |
Question:
What is the date for the grass surface final against Nathan Healey?
Answer:
4 February 2008