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 | Pos. | Player | From club | Transfer fee |
| --- | --- | --- | --- | --- |
| 2 July 2008 | FW | Jô | CSKA Moscow | £18m |
| 30 July 2008 | DF | Tal Ben Haim | Chelsea | £5m |
| 21 Aug. 2008 | DF | Vincent Kompany | Hamburg | £6m |
| 28 Aug. 2008 | MF | Shaun Wright-Phillips | Chelsea | £8.5m |
| 31 Aug. 2008 | DF | Pablo Zabaleta | Espanyol | £6.45m |
| 31 Aug. 2008 | DF | Gláuber | Nuremberg | Undisc. |
| 01 Sep. 2008 | FW | Robinho | Real Madrid | £32.5m |
| 03 Jan. 2009 | DF | Wayne Bridge | Chelsea | £10m |
| 19 Jan. 2009 | FW | Craig Bellamy | West Ham | £14m |
| 21 Jan. 2009 | MF | Nigel de Jong | Hamburg | £16m |
| 01 Feb. 2009 | GK | Shay Given | Newcastle Utd. | £5.9m |
Question:
What is Pos., when From Club is "Chelsea", and when Date is "30 July 2008"?
Answer:
DF