Friday Ahunanya's camp claim they were robbed by a hometown decision after losing to David Tua in west Auckland.
The judges awarded a unanimous decision to Tua but Ahunanya felt otherwise and his manager Luis Tapia was clearly upset at the loss.
"This is bad for the sport," said Tapia.
"If we fought in the United States we would have won it.
"David Tua couldn't hit Friday, he hit him in the arms. I think this is sad. I have had 15 calls from the US and they all say we won the fight."
Ahunanya said his strategy was to box and move and keep away from Tua "because he is a devastating fighter".
It was a plan he carried out but he didn't appear to throw enough punches to win and the judges saw it that way despite the claims of the visitors.
In the end Tua's positive approach outweighed the negative tactics of Ahunanya although he was adamant his style was worth more.
"I can't go into a shootout with David Tua," said Ahunanya, acknowledging the Kiwi's power. "But I came prepared and I think that showed.
Promoter David Higgins revealed that two of the judges were flown into Auckland by the sanctioning body the WBO and they had been approved by Tapia.
Ahunanya kept up the barrage by saying: "I understand this is his backyard. I understand his homecourt advantage. But I thought I won the fightg without a doubt."
Tapia said he would like a rematch in the United States believing a repeat of his fighter's performance would bring victory there.
Tapia said he had similar concerns about the judges when Ahunanya fought Shane Cameron in Auckland two and a half years ago. But the big Nigerian had taken the decision out of the judges' hands by knocking out Cameron in the 12th round.
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