CREATE TABLE table_71213 ("Date" TEXT, "Opponent" TEXT, "Score" TEXT, "Loss" TEXT, "Attendance" FLOAT, "Record" TEXT)

Who was the opponent at the game that had a loss of Hendrickson (0-1)?
SELECT "Opponent" FROM table_71213 WHERE "Loss" = 'hendrickson (0-1)'
SELECT "Opponent" FROM "table_71213" WHERE "Loss" = 'hendrickson (0-1)'