CREATE TABLE table_47821 ("Year" FLOAT, "Date" TEXT, "Winner" TEXT, "Result" TEXT, "Loser" TEXT, "Location" TEXT)

Who was the loser against the New York Giants in 2001?
SELECT "Loser" FROM table_47821 WHERE "Year" = '2001' AND "Winner" = 'new york giants'
SELECT "Loser" FROM "table_47821" WHERE "Winner" = 'new york giants' AND "Year" = '2001'