The 'Ikale Tahi triumphed 30-26 in Nuku'alofa, in front of ten thousand fervent supporters in the first test match at Teufaiva Stadium for eight years.
RNZI reports the home side raced out to a 14-3 lead in the opening 20 minutes but Manu Samoa closed the gap to one point at half-time, courtesy of a Faifili Levave try and two more penalties from Tusi Pisi.
With the match in the balance at 20-19, halfback Sonatone Takulua completed a breakaway Tongan try from inside their own half and added the extras to make it 30-19 with half an hour to play.
