Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26457 ( "Special" text, "Original airdate" text, "Iron Chef" text, "Challenger" text, "Challenger Specialty" text, "Theme Ingredient" text, "Winner" text )

### Question ###
Who was the winner when the iron chef is hiroyuki sakai?

### Accurate SQL ###

SELECT "Winner" FROM table_26457 WHERE "Iron Chef" = 'Hiroyuki Sakai'