what are all the playoffs for u.s. open cup in 1st round
CREATE TABLE table_1046170_5 (playoffs VARCHAR, us_open_cup VARCHAR)
SELECT playoffs FROM table_1046170_5 WHERE us_open_cup = "1st Round"
### Context: 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 ### Answer: SELECT playoffs FROM table_1046170_5 WHERE us_open_cup = "1st Round"