Samoa has made four changes to their squad for this weekend's Hamilton Sevens.
Former captain David Afamasaga will make his first appearance of the season after missing the Oceania Sevens and Dubai and Cape Town tournaments through injury, although Tomasi Alosio will continue to lead the team on the field.
Laaloi Leilua is also back, having missed the opening two legs to return home and be with his family after his daughter contracted the measles virus.
Uaina Sione is poised to make his World Series debut after recovering from an injury sustained at the Oceania Sevens in November, while Va'afauese Apelu Maliko is set to make his first appearance on the global circuit since 2018.
Pacific Games sprint star Kelvin Masoe and Kirisimasi Savaiinaea are among the players to make way from the team that featured in South Africa, with Phillip Luki joining Melani Matavao and Pesamino Iakopo in the non-travelling reserves, while Manu Samoa winger Belgium Tuatagaloa has joined English Premiership club London Irish.
Head coach Sir Gordon Tietjens said the ability to make good one-on-one tackles had been a key focus in their preparation for the weekend.
"Teams are getting punished with either yellow cards or penalties and it's an area that we have to get better at and look to basically chop tackles so we can create opportunities," he said.
"Defence is everything in Sevens rugby and we're working on our systems so we're all quite obviously clear around what our defence systems and playing against teams like Fiji, Argentina and Australia in a really tough pool are going to be key for us."
Samoa opened the World Series with a fourth-place finish in Dubai but lost all three pool games in Cape Town to slip to seventh in the overall standings.
With Hamilton also hosting an official leg of the Women's World Series for the first time the format for the men's competition has been revamped, with the four pool winners advancing directly to the semi finals.
Sir Gordon said that had added some pressure.
"You have to win your pool," he said. "So that first game against Fiji is huge for us.
"It's a tough pool and I suppose it's the work you do in between tournaments and how you turn up where you're conditioned and you're ready to play and I suppose preparation is everything and that would apply to Fiji and ourselves."
The Samoan team is scheduled to arrive in New Zealand tonight.
Tomasi Alosio (c), Alamanda Motuga, Tofatu Solia, Joe Perez, Laaloi Leilua, Elisapeta Alofipo, David Afamasaga, John Vaili, Paulo Scanlan, Tuna Tuitama, Uaina Sione, Va'a A Maliko, Losi Filipo.