What is Date, when Opponent is At Saskatchewan Roughriders?
CREATE TABLE table_name_13 (date VARCHAR, opponent VARCHAR)
SELECT date FROM table_name_13 WHERE opponent = "at saskatchewan roughriders"
### Context: CREATE TABLE table_name_13 (date VARCHAR, opponent VARCHAR) ### Question: What is Date, when Opponent is At Saskatchewan Roughriders? ### Answer: SELECT date FROM table_name_13 WHERE opponent = "at saskatchewan roughriders"