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_2511876_1 ( playoffs VARCHAR, open_cup VARCHAR )

### Question ###
Name the number of playoffs for 3rd round

### Accurate SQL ###

SELECT COUNT(playoffs) FROM table_2511876_1 WHERE open_cup = "3rd Round"