what is the 2011 performance for the US open?
CREATE TABLE table_name_2 (tournament VARCHAR)
SELECT 2011 FROM table_name_2 WHERE tournament = "us open"
### Context: CREATE TABLE table_name_2 (tournament VARCHAR) ### Question: what is the 2011 performance for the US open? ### Answer: SELECT 2011 FROM table_name_2 WHERE tournament = "us open"