Michael Zerafa has pulled out of his bout with Tim Tszyu just a week out from their highly-anticipated fight in Newcastle.
Promoters No Limit Boxing instead announced Steve Spark, who beat Tszyu rival Jack Brubaker, will now fight Tszyu on July 7.
"We knew from the moment he looked Tim in the eyes at the press conference and went quiet that he never wanted this fight," CEO of No Limit Boxing George Rose said of Zerafa's late withdrawal.
"I knew it. Tim knew it. Australia knew it.
"He never wanted this fight and all I can say is I'm sorry for everyone who has wanted this fight for so long."
Spark (12-1; 11 KO) impressed in his convincing win over Brubaker.
"We said rain hail or shine, Tim Tszyu was fighting in Newcastle on July 7 and that's exactly what's going to happen.
"Full credit to Steve Spark for taking this fight at short notice.
"We know he is going to make for an incredibly difficult fight for Tim."
Tszyu was quick to thank Spark for taking the fight at short notice.
"Credit to Steve for taking this fight," Tszyu said.
"He's a dangerous fighter with a lot of power.
"I've seen it for myself. I was ringside at the fight in Wollongong when he hammered Jack Brubaker, and saw how well he did under the bright lights.
"He has power, stamina and keeps the pressure on. I know he's coming to hit and hit hard.
"I'm expecting that and much more next Wednesday night. It's going to be a great fight."
Spark was happy to step up to the plate.
"I'm a fighter and fighters fight," he said. "I like challenges and life is about taking risks. With no risk there is no reward."
