Jubilant Boston Rugby Club under 16s secured the points following a 15-7 NLD victory at Bourne.
In what was always going to be a tense, close match, the result saw Boston move to top of their group pool.
Bourne had much the better start to the game, piling pressure on the visitors in the first 15 minutes.
A series of penalties and drives put them within touching distance of the Boston line, but the away defence stood firm.
The second half started as the first ended, Boston enjoying a greater share of possession - and the travelling support soon had something to cheer as elusive centre Josh Cook beat his man and straightened the line before giving full back Tom Baldam the chance to stretch his legs and outpace the defence to score the first try of the game.
Boston moved further ahead 10 minutes later with a try from Tom Hobbs, the player helped over the line by his teammates following a scrum.
It was 15-0 when a clinical move from the backs provided resurgent winger Ben Moody with the chance to storm over the line to loud cheers from Boston players and supporters.
Bourne didn’t let their heads drop and, as Boston pushed for a fourth try, a breakaway resulted in a converted try under the posts.
BOSTON: Allen, Ancell, Araujo, Baker, Baldam, Clark, Colson, Cook, Curtis, Cuthbertson, Gray, Hardstaff, Hobbs, Langford, Moody, Raggo, Scott, Scuffham, Stones-Blackman, C. Taylor, T. Taylor, Williams.