CREATE TABLE table_47327 ("Game" FLOAT, "October" FLOAT, "Opponent" TEXT, "Score" TEXT, "Record" TEXT)

Which opponent played in game 3 before October 18?
SELECT "Opponent" FROM table_47327 WHERE "October" < '18' AND "Game" = '3'
SELECT "Opponent" FROM "table_47327" WHERE "Game" = '3' AND "October" < '18'