On March 26, fellow Warrior Brendan Wallace was also victorious in a 75kg bout, beating Wellingtonian Craig Johnston when the fight was stopped early in round three.
"Brendan's superior speed and skill was too much for Craig Johnston to handle," said Alderton.
Two fighters from River City Martial Arts were also on the card in non-counting novice fights.
Nathan Topia and Che Barlow did very well, with Barlow's fight being called off in the second round.
All of them will be competing at the Rumble, scheduled for Saturday, April 23.
Alderton said he has 13 fights lined up, and although this year's event doesn't have the big headline fight of previous Rumbles, about five or six of the bouts will be very good contests.
Awa Kings Lee Kara will compete at heavyweight against Rotorua's Jason Robinson.