With his second successful defense of the title he won last October , Watanabe improved his record to 20 - 2 - 2 with 13 KOs .
Sultan fell to 6 - 4 - 1 with three KOs .
With his second successful defense of the title he won last October , Watanabe improved his record to 20 - 2 - 2 with 13 KOs , while Sultan fell to 6 - 4 - 1 with three KOs .