Who was the opponent at Baum Stadium on April 6?
CREATE TABLE table_name_90 (opponent VARCHAR, site_stadium VARCHAR, date VARCHAR)
SELECT opponent FROM table_name_90 WHERE site_stadium = "baum stadium" AND date = "april 6"
### Context: CREATE TABLE table_name_90 (opponent VARCHAR, site_stadium VARCHAR, date VARCHAR) ### Question: Who was the opponent at Baum Stadium on April 6? ### Answer: SELECT opponent FROM table_name_90 WHERE site_stadium = "baum stadium" AND date = "april 6"