CREATE TABLE table_26457 ("Special" TEXT, "Original airdate" TEXT, "Iron Chef" TEXT, "Challenger" TEXT, "Challenger Specialty" TEXT, "Theme Ingredient" TEXT, "Winner" TEXT)

Who was the winner when the iron chef is hiroyuki sakai?
SELECT "Winner" FROM table_26457 WHERE "Iron Chef" = 'Hiroyuki Sakai'
SELECT "Winner" FROM "table_26457" WHERE "Iron Chef" = 'Hiroyuki Sakai'