CREATE TABLE table_name_48 (date VARCHAR2, stadium VARCHAR2, final_score VARCHAR2)

What is the date that a game at the Alltel Stadium had a final score of 6-20?
SELECT date FROM table_name_48 WHERE stadium = "alltel stadium" AND final_score = "6-20"
SELECT "date" FROM "table_name_48" WHERE "6-20" = "final_score" AND "alltel stadium" = "stadium"