Boxer Danny Green is pumped for tonight's clash with American Antonio Tarver at the Sydney Entertainment Centre.

Green is defending his IBO cruiserweight title against the four-time light heavyweight world champion and said this is the most important fight of his career. 

Green said there was a lot of international interest in their fight tonight.

He is the favourite to win, but Tarver believes Green's aggressiveness will work in his favour, and he will knock him out.

Green's trainer Angelo Hyder said it was important to keep his fighter as calm as possible, which could be tricky given that Green is steaming mad over the American camp's efforts to trash talk him in the run up to the fight.