Tszyu vows to take Inoue in four rounds

Undefeated in his 19 professional fights after going 33-1 in the amateur ranks, Tszyu is the mandatory challenger to Brian Castano’s WBO light-middleweight belt.

A loss to Inoue would scupper the Australian’s world-title ambitions next year.

‘‘What else could I be doing? Sitting on my arse waiting. I don’t wait for opportunities. I go out and take them,’’ Tszyu said.

Takeshi (19-1-1) is pledging to break Tszyu’s spirit ‘‘and towards the end I will win the match with a knockout’’.