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:
| Tournament | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | Win % |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Grand Slam tournaments | Grand Slam tournaments | Grand Slam tournaments | Grand Slam tournaments | Grand Slam tournaments | Grand Slam tournaments | Grand Slam tournaments | Grand Slam tournaments |
| Australian Open | 2R | 2R | 2R | 1R | 2R | SF | 44.44 |
| French Open | A | 2R | 1R | 2R | 1R | 1R | 33.33 |
| Wimbledon | A | 1R | 1R | A | 1R | 1R | 0 |
| US Open | 1R | 1R | A | SF | 1R | 2R | 50 |
| Win–Loss | 1–2 | 2–4 | 1–3 | 5–3 | 1–4 | 5–4 | 38.46 |
Question:
Which 2010 featured the US Open?
Answer:
A