The 26 - year - old Ishii sagged to 31 - 4 with 21 KOs .
The 26 - year - old Ishii took his third crack at a world title following unsuccessful bids in 1999 and 2000 .
The 26 - year - old Ishii , who took his third crack at a world title following unsuccessful bids in 1999 and 2000 , sagged to 31 - 4 with 21 KOs .