Vodafone Flying Fijians wing, Patrick Osborne shakes-off Samoan fullback Albert Nikoro during 2016 World Rugby Pacific Nations Cup at ANZ Stadium.
Tonga grabbed the final spot in Pool C of the 2019 Rugby World Cup on Saturday as the runner-up in Oceania qualifying. But Samoa needed at least a bonus point in defeat to prevent Tonga claiming the second automatic qualifying place from Oceania.
Fiji scored five tries to secure the bonus point win.
As for Fiji, they finish top of the Oceania group and go into Pool D, along with Australia, Wales and Georgia, with a last spot still to be decided.
The Samoans, who finished a point behind Tonga in the standings across the two competitions, must now wait to learn the identity of the European team they will face next year to determine the Play-off victor qualifier in Pool A.
Formula 1 Racing Odds: British Grand Prix 7/14/17
Britain's Jolyon Palmer , in search of his first points of the season, has finished 11th in three of the last four races. Alonso was already set to start at the back anyhow due to a 30-place grid penalty for changes to his Honda engine.
Samoa needed to get something out of the match if they were to claim the Oceania 2 spot, but their failure to do so means that Tonga instead complete the Pool C line-up with England, France, Argentina and United States of America for Japan 2019.
Seniloli scored two tries in the first half and was the first to cross over for Fiji again in the second half.
Samoa equalized through captain David Lemi, playing his 50th test, when scrumhalf Kahn Fotuali'i caught Fiji napping with a quick tapped penalty.
Samoa led 16-14 at halftime.
Vatubua ran off a pass from Nagusa to score in the 52nd minute and Ratuniyarawa crashed over from close range six minutes from fulltime.