Kenya dropped two places to 29th after losing to Chile, who improved one place to 27th. Hong Kong dropped two places to 24th after the Russian defeat.
Russia beat Hong Kong 31-12 to lift the inaugural Hong Kong Cup of nations in 2015.
The East Europeans won all their three matches.
They beat Hong Kong 27-0, Zimbabwe (19-15) and Papua New Guinea (49-19).
“I have made the shifts so as to give all the players in his tour party of 26 a chance to play,” said Paarwater.
He added that expected a highly physical approach from the Russians.
“They are a different challenge to us because they are physical but the guys are ready for them. It will be a tough game but we hope the outcome can be in our favour,” said Paarwater.