After extinguishing a brief early Japanese lead, the Poles were dominant under the basket, shooting 55 per cent from two-point range.
They stormed clear to leave the Japanese still in search of their first win in the men's competition.
Player-coach Piotr Luszynski was satisfied with his Poland team's performance, and with his own contribution on the court of 21 points and 17 rebounds.
They surged clear with a 12-0 run which began late in the first quarter, punishing Japan's turnovers as the gap grew to 43-20 at half-time.
And although Japan's Reo Fujimoto had 12 of his team-best 18 points in the second half, there was no recovery as Poland held their rivals in check after moving as much as 50-23 clear with 7:32 left in the third quarter through a three-pointer from Filipski.
A 9-0 Japanese streak in the fourth quarter reduced the deficit but it came too late.
The 2008 bronze medallists Australia dominated the game in every department, and held the Host Nation to just 21 per cent shooting from the field.
'They know what's coming,' he said. 'They know that's not the way we play.
'They didn't stick to the game plan and if you don't do that then you won't win anything.'