CREATE TABLE table_15784 ("Date" TEXT, "Opponent" TEXT, "Score" TEXT, "Loss" TEXT, "Record" TEXT)

Who was the opponent at the game that had a loss of Harden (9-6)?
SELECT "Opponent" FROM table_15784 WHERE "Loss" = 'harden (9-6)'
SELECT "Opponent" FROM "table_15784" WHERE "Loss" = 'harden (9-6)'