CREATE TABLE table_name_10 (goal_difference INT, played VARCHAR, wins VARCHAR, position VARCHAR)

Which Goal Difference has 13 Wins, and a Position of 3, and Played smaller than 30?
SELECT AVG(goal_difference) FROM table_name_10 WHERE wins = 13 AND position = 3 AND played < 30
SELECT AVG("goal_difference") FROM "table_name_10" WHERE "played" < 30 AND "position" = 3 AND "wins" = 13