Tongan coach Toutai Kefu says despite the World Cup being weeks away, their main goal remains beating Fiji on Saturday at Eden Park.
Tonga play Fiji as part of the Pasifika Challenge with the New Zealand Heartland XV meeting Samoa in the early game.
The Kingdom have only won 27 of their previous 91 match-ups against the Flying Fijians but prevailed when the teams last met in Lautoka 14 months ago.
Toutai Kefu said he is fine-tuning his squad heading into the World Cup but are not looking too far ahead.
"We have a squad of 33 at the moment so we need to drop two players out of the squad, one forward and one back but in terms of this game we want to win.
"We have our best team on the park, so we want to win. That's our goal."
Tonga will announce their Rugby World Cup squad on Monday before playing New Zealand in Hamilton in the two teams' final hit-out before the tournament.