Two second-half goals in as many minutes set up Ryan Stewart’s side in a match that dominated from start to finish, giving Tonga little opportunity throughout the 90 minutes.
There was strong local support for both sides as Samoa started brightly, controlling possession deep in Tongan territory, their opponents happy to sit back and try to exploit any space on the counter.
Just under half an hour in and Tongan goalkeeper Nimilote Moala was called into action, producing a strong save to deny Greg Siamoa after the forward had been played in on the right-hand side channel.