Junior Fa beat Hunter Sam by unanimous decision in their six round bout in Auckland on Thursday night.
The win at the ABA stadium means Junior Fa now holds an undefeated record of 12 wins with 7 knockouts.
Fa and Sam fight was the main event at the Shane Cameron-promoted Indian Motorcycles Fight Night.
This makes 12 wins out of 12 fights for Fa.
Seven of those wins were knockout.
Fa has described his performance as “disappointing” and said he would review the fight footage to figure out what went wrong.
Fa – who is signed with Lou DiBella Promotions in the US, will likely defend his NZPBA title in Auckland in July before heading to the US to fight under the Dibella banner.
In February the New Zealand-Tongan based boxer won his debut fight in the United States after he defeated Keith Barr with a knockout in the third round of a scheduled six round fight.