Both sides beat Namibia in their opening games - but Fiji went on to lose heavily to South Africa, while Samoa were edged out by Wales.
Fiji have opted to name an experienced line-up for the all-Pacific islands affair, with World Cup veteran Nicky Little returning.
Little, who is appearing in his fourth tournament, replaces London Welsh's Waisea Sedre Luveniyali at fly-half as one of five changes.
With Dominiko Waqaniburotu suspended Sisa Koyamaibole, Mala Ravulo and Netani Talei will team up in a new-look back row.
The other change comes in the second row, with Seko Kalou getting the nod.
Samoa will welcome back talented playmaker Tusi Pisi for the encounter, with the fly-half having been forced to pull out of the 17-10 defeat to Wales at the 11th hour.
Flanker Taiasina Tuifua is also back in the starting XV after returning to full fitness, while giant prop Census Johnston is preferred in the front row.
Bath-bound prop Anthony Perenise drops to the bench, where he is joined by Filipo Levi, Manaia Salavea, Jeremy Sua and James Sooialo.
Samoa: 15 Paul Williams, 14 Sailosi Tagicakibau, 13 George Pisi, 12 Seilala Mapusua, 11 Alesana Tuilagi, 10 Tusi Pisi, 9 Kahn Fotuali'i, 8 George Stowers, 7 Maurie Faasavalu, 6 Taiasina Tuifua, 5 Kane Thompson, 4 Daniel Leo, 3 Census Johnston, 2 Mahonri Schwalger (capt), 1 Sakaria Taulafo.Replacements: 16 Ti'i Paulo, 17 Anthony Perenise, 18 Filipo Lavea Levi, 19 Manaia Salavea, 20 Jeremy Sua, 21 Eliota Fuimaono Sapolu, 22 James Sooialo.
Fiji: 15 Kini Murimurivalu, 14 Vereniki Goneva, 13 Gaby Lovobalavu, 12 Seremaia Bai, 11 Napolioni Nalaga, 10 Nicky Little, 9 Nemia Kenatale, 8 Sisa Koyamaibole, 7 Mala Ravulo, 6 Netani Edward Talei, 5 Leone Nakarawa, 4 Seko Kalou, 3 Deacon Manu (capt), 2 Sunia Koto, 1 Campese Ma'afu.Replacements: 16 Talemaitoga Dautu Tuapati, 17 Setefano Somoca, 18 Rupeni Nasiga, 19 Akapusi Qera, 20 Vitori Tomu Buatava, 21 Albert James Vulivuli, 22 Waisea Sedre Luveniyali
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