A new Fiji Bitter Marist 7s Under-21 champion has been crowned.

The Yadua based Ravuka Sharks have dethroned defending champion, the Dominion Brothers.

A last-minute converted try by Timoci Naco made the difference for the confident Ravuka side to defeat Dominion Brothers 12-10.

The side took an early 5-nil lead with a try to Simeli Karacia.

Dominion Brothers soon caught up to level the score at 5-all at halftime with Joji Nasova diving over the try line.

The Dominion Brothers started strong in the second half with an unconverted try to Rusiate Ravono to lead 10-5.

Not intimidated by the lead, the Ravuka Sharks fought on and were awarded a last-minute try to winger Naco.

Leveled at 10-all, Karacia added the extra two points to snatch the title.

20-year-old Karacia was named the best player of the Marist 7s Under-21.