Yamanaka to fight in April

The Japanese southpaw is expected to defend his title for the eighth time at Osaka’s Bodymaker Colosseum when he gets in the ring with the undefeated challenger (23-0, 15 knockouts).

Yamaka said: "My balance has been good in training. My opponent has an opening before and after he throws punches. If I strike, then I'll naturally get a KO."

Yamaka won the title in 2011, and has thus far defended it against all comers. However, Santillan will be a tough fight as he is five years younger and has an excellent record.

Just yesterday Yamaka was linked with a fight against Cuban star Guillermo Rigondeaux, however in order to secure that fight he would most likely have to go up in weight.