Papalii's focus is solely on the Raiders making the top four and playing finals, which means he'll worry about any international duty at the end of the season.

Australia coach Mal Meninga named the 27-year-old in his Origin merit side on Sunday opening the door for him to play his first Kangaroos Test since 2016.

While Papalii said it was a tremendous honour he would worry about whether he plays for Australia or Samoa until after the Raiders' 2019 campaign is over.

That means he's only worried about the Wests Tigers at Canberra Stadium on Saturday.

The Queensland big bopper has been given Monday and Tuesday off to recover after another big performance in the Raiders' 36-14 victory over St George Illawarra on Sunday.

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Papalii ran for 121 metres four days after scoring a try to get the Maroons back into the State of Origin decider.

It's the 15^th time he's broken the century in the NRL this season.

He said he had already moved on from the pain from that heart-breaking Origin loss and wouldn't use it to drive the Raiders towards finals.

"Origin is past me now. I've left that. That Thursday I woke up after Origin and that was the end of it. That's where I want to leave that," Papalii said.

"The focus is fully on Raiders now and hopefully making the top four, finding some form and combinations before finals."

Papalii was one of two Raiders named in Meninga's merit team, along with Canberra five-eighth Jack Wighton.

But he said he still hadn't decided whether he would make himself available for Australia having not done so the past two years.

"For Mal to pick me in that merit team it's a great honour, but we still have [eight] games to go and I'm just concentrating on the Tigers and hopefully put in a big performance for the former Green Machine players," Papalii said.

"Once that time comes I'll make my decision then ... the Aussie and Samoa teams are definitely up there for me."

NRL ROUND 18

Saturday: Canberra Raiders v Wests Tigers at Canberra Stadium, 5.30pm.