Defending Fiji Bitter Wairiki 7s U21 champion Dominion Brothers is through to the final of the main cup competition.

Dominion Brothers beat Wainidruki from Savusavu 7-0 to claim the first spot in the final.

They will defend their title against Black Heron Bua.

Black Heron Bua beat Vueticakau 10-7 in the second semifinal to claim a spot in the final.

The main prize money for the U21 cup competition is $1,800.