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_11570261_2 (runner_s__up VARCHAR, margin_of_victory VARCHAR)

### Question ###
Who were the runner(s)-up when Tiger won by 11 strokes?

### Accurate SQL ###

SELECT runner_s__up FROM table_11570261_2 WHERE margin_of_victory = "11 strokes"