Guam have won the Asia Rugby Championship Division III East after thrashing China, 52-12, in Bandar Seri Begawan.
Chris Sgro led the way for the US Territory with four tries on Thursday afternoon at the Belapan Stadium.
The 'Flying Proas' thumped hosts Brunei 66-12 in their opening match on Tuesday to assure themselves the title, despite their two opponents still having a game in hand.
There is no promotion/relegation on offer this year but head coach Tony Penn, a former Hurricanes and Taranaki representative in New Zealand, said it was still a valuable expeirence.
"It's all about getting promoted to a higher division so next year's a real focus for us," he said.
"It's been a bit of a development year for us, in particular this year, because we've got 11 out of our 22 are debutants so we're going through a little bit of a rebuilding phase.
"Which is fantastic because it's a good way to blood new players on the island and especially gear up for future fixtures and tournaments, it will be good for the depth on the island."
Guam will complete their Asian tour against a Philippines Residents XV in Manila on Saturday.