The 23-member team to face Uruguay need to have a balance of experience and youth to make sure Fiji notches a bonus points win yet have a fresh squad to face Georgia next Thursday.
The Flying Fijians have a few players who did not play against Australia who could be named in the starting 15 for the Los Teros at the Kamaishi Recovery Memorial Stadium at Kamaishi on the northern area of Honshu.
Tight head prop Lee-Roy Atalifo and hooker Mesulame Dolokoto were not in the starting 23 in the opener against Australia, so the pair could team up with Campese Ma’afu or Peni Kovekalou in the front three.
Experienced Apisalome Ratuniyarawa could pair Tevita Ratuva in the locks with Leone Nakarawa on the bench.
The injuries to incumbent number eight Viliame Mata could see skipper Dominiko Waqaniburotu take over the back of the scrum with Semi Kunatani and Mosese Voka taking over the side of the scrum.
Another option would be slotting Nakarawa as number eight as he was playing in the second half of the opener and putting Waqaniburotu at number 6 and Kunatani at number 7. Voka should replace one of them in the third quarter.
The rotation of players is not only healthy for the 31 member squad but refreshes idle players in the 23-member squad for the next assignment.
Halfback Nikola Matawalu who had an opportunity to warm up in the latter stage against Australia could start and nippy Henry Seniloli start from the bench giving hard working Frank Lomani a break.
Josh Matavesi or Alifereti Veitokani could start as flyhalf or fullback which they could capably fill in for the second pool match.
The centres positions could revert to the Jale Vatubua, Semi Radradra combination with Vereniki Goneva and Filipo Nakosi on the wings.
The eight to be on the bench between experienced players and novices need to come in during the third or fourth quarter but not too late because the starting XV need to be replaced before they get too exhausted.
The Uruguay match is important in getting a bonus points win in the long run in the event that Fiji, Wales and Australia end the pool stages with three wins and a loss.
In that scenario Fiji needs to win bonus points for both Uruguay, Georgia and Wales to nullify Wales getting an edge over Fiji.
Fiji needs to be wary because Uruguay displaced Canada to qualify for RWC in Pool D and has recorded recent wins over the Argentine XV and Spain in the Nations Cup in June.