Debutants at the Cup of Nations, the Pukpuks were thumped in their opening match to Hong Kong 51-5.
But a much improved performance on Tuesday this week saw the Pukpuks pile on some points in the second half despite going down to defending champions Russia 49-19.
For Zimbabwe, they lost to Russia in round one, but only by a narrow 19-15 score line. They then suffered their second defeat to Hong Kong 34-11 in their next match.
The Pukpuks and Zimbabwe game is scheduled for 2pm (4pm PNG time) on Saturday at the Hong Kong Football Club.
