CREATE TABLE table_name_13 (date VARCHAR, opponent VARCHAR, game_site VARCHAR, week VARCHAR)

Game site of shea stadium, and a Week smaller than 10, and a Opponent of baltimore colts happened on what date?
SELECT date FROM table_name_13 WHERE game_site = "shea stadium" AND week < 10 AND opponent = "baltimore colts"
SELECT "date" FROM "table_name_13" WHERE "baltimore colts" = "opponent" AND "game_site" = "shea stadium" AND "week" < 10