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_24431264_18 (rank VARCHAR, withdrew_due_to VARCHAR)

### Question ###
List the rank of the player that left the tournament due to right foot injury

### Accurate SQL ###

SELECT COUNT(rank) FROM table_24431264_18 WHERE withdrew_due_to = "right foot injury"