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:
| Year | Australian Open | French Open | Wimbledon | US Open |
| --- | --- | --- | --- | --- |
| 2003.0 | Andre Agassi | Juan Carlos Ferrero | Roger Federer | Andy Roddick |
| 2004.0 | Roger Federer | Gastón Gaudio | Roger Federer | Roger Federer |
| 2005.0 | Marat Safin | Rafael Nadal | Roger Federer | Roger Federer |
| 2006.0 | Roger Federer | Rafael Nadal | Roger Federer | Roger Federer |
| 2007.0 | Roger Federer | Rafael Nadal | Roger Federer | Roger Federer |
| 2008.0 | Novak Djokovic | Rafael Nadal | Rafael Nadal | Roger Federer |
| 2009.0 | Rafael Nadal | Roger Federer | Roger Federer | Juan Martín del Potro |
| 2010.0 | Roger Federer | Rafael Nadal | Rafael Nadal | Rafael Nadal |
| 2011.0 | Novak Djokovic | Rafael Nadal | Novak Djokovic | Novak Djokovic |
| 2012.0 | Novak Djokovic | Rafael Nadal | Roger Federer | Andy Murray |
| 2013.0 | Novak Djokovic | Rafael Nadal | Andy Murray | Rafael Nadal |
Question:
What is the Australian open in 2010?
Answer:
Roger Federer