Joseph Parker has insinuated that referee, Giuseppe Quartarone may have a hand in his defeat to Anthony Joshua on Saturday.
Joseph was beaten by WBA and IBF champion, Joshua, in Cardiff, Wales.
The British boxer only won the fight on points in the 12th round in an unanimous decision.
Parker, 26, the youngest of current world champions, said, “Today, I got beaten by a better champion and a bigger man.
“I have a lot to work on and it was a good experience being here. I want to go back, train hard and come back stronger.
“No regrets, take it on the chin. He was the better man today and we will be back again.
“[I need to]work harder, come back stronger with more punches.