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:
| Opposing Teams | Against | Date | Venue | Status |
| --- | --- | --- | --- | --- |
| Scotland | 20.0 | 03/02/2007 | Twickenham , London | Six Nations |
| Italy | 7.0 | 10/02/2007 | Twickenham , London | Six Nations |
| Ireland | 43.0 | 24/02/2007 | Croke Park , Dublin | Six Nations |
| France | 18.0 | 11/03/2007 | Twickenham , London | Six Nations |
| Wales | 27.0 | 17/03/2007 | Millennium Stadium , Cardiff | Six Nations |
| South Africa | 58.0 | 26/05/2007 | Vodacom Park , Bloemfontein | First Test |
| South Africa | 55.0 | 02/06/2007 | Loftus Versfeld , Pretoria | Second Test |
| Wales | 5.0 | 04/08/2007 | Twickenham , London | Test Match |
| France | 21.0 | 11/08/2007 | Twickenham , London | First Test |
| France | 22.0 | 18/08/2007 | Stade Vélodrome , Marseille | Second Test |
| U.S.A. | 10.0 | 08/09/2007 | Stade Félix-Bollaert , Lens | 2007 Rugby World Cup |
| South Africa | 36.0 | 14/09/2007 | Stade de France , Saint-Denis | 2007 Rugby World Cup |
| Samoa | 22.0 | 22/09/2007 | Stade de la Beaujoire , Nantes | 2007 Rugby World Cup |
| Tonga | 20.0 | 28/09/2007 | Parc des Princes , Paris | 2007 Rugby World Cup |
| Australia | 10.0 | 06/10/2007 | Stade Vélodrome , Marseille | 2007 Rugby World Cup |
| France | 9.0 | 13/10/2007 | Stade de France , Saint-Denis | 2007 Rugby World Cup |
| South Africa | 15.0 | 20/10/2007 | Stade de France , Saint-Denis | 2007 Rugby World Cup |
Question:
What is the average Against, when Status is "2007 Rugby World Cup", and when Opposing Teams is "U.S.A."?
Answer:
10.0