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_1046170_5 ( playoffs VARCHAR, us_open_cup VARCHAR )

### Question ###
what are all the playoffs for u.s. open cup in 1st round

### Accurate SQL ###

SELECT playoffs FROM table_1046170_5 WHERE us_open_cup = "1st Round"