Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_84 (tournament VARCHAR)

### Question ###
If the US Open tournament had 2r in 2012, what was it in 2010?

### Accurate SQL ###

SELECT 2010 FROM table_name_84 WHERE 2012 = "2r" AND tournament = "us open"