Brisbane: English challenger Gary Corcoran has claimed Australian WBO welterweight champion Jeff Horn is a “dirty” fighter ahead of their title bout in Brisbane on Wednesday.

In an media conference on Monday, Corcoran’s camp provided a laptop presentation to indicate that Horn led with his head and left his head in the clinches.

It is Horn’s first title defence since he upset Philippine boxing hero Manny Pacquiao, the winner of eight world championships in different weight divisions, in Brisbane last July to win the belt.

“Let me start by saying I respect Jeff as a fighter… they don’t give away world title belts for nothing,” Corcoran’s co-trainer Frank Greaves said.

“[But] let’s get one thing straight. He is dirty. There is absolutely no question that he’s dirty.

“He’s leading in with his head, he leaves his head in there all the time. I just want to draw attention to that fact.”