On what day(s) did the Gophers play against Michigan?
CREATE TABLE table_name_88 (date VARCHAR, opponent_number VARCHAR)
SELECT date FROM table_name_88 WHERE opponent_number = "michigan"
### Context: CREATE TABLE table_name_88 (date VARCHAR, opponent_number VARCHAR) ### Question: On what day(s) did the Gophers play against Michigan? ### Answer: SELECT date FROM table_name_88 WHERE opponent_number = "michigan"