Close to 300 people turned up at the Murray Barracks to watch the first of the three POMRFL grand finals.
It was a scrappy first few minutes of football from both sides with poor ball handling.
The fifteen minute mark saw first points to Defence from a penalty goal, kicked 30 metres by five eighth Kennedy Juria.
Defence allowed Brothers back into the game right from the restart giving away a penalty.
Brothers wasted no time getting on the board after a good offload by Steven Yei to give the ball out to winger Abbas Mondia to dive over and score on the wing.