It’s a winner takes all, survival showdown in Cardiff.
Back in June, these two met in Wrocław, and a much-changed Wales side looked set for victory when Jonny Williams lashed home an opener.
However, Poland fought back and snatched the points late on; Jakub Kamiński and Karol Świderski on target.
This is actually the only victory either side have managed in the group, with both enjoying just a solitary draw since then.
Poland’s point came in Rotterdam against Netherlands, actually leading 2-0 but, given that Memphis thwacked the post with a stoppage time penalty, were thankful for the draw.
In Thursday’s rematch, Czesław Michniewicz’s team were simply outclassed at Holland left Stadion Narodowy 2-0 winners.
Poland have only ever competed in the Nations League’s top-tier, but have won just three of 15 matches, only beating Bosnia twice and that aforementioned victory over Wales.
As for the Dragons, they were promoted to League A in 2020, so are very much determined to stay here.
Rob Page’s team have just one point on the board, holding Belgium in Cardiff, courtesy of Brennan Johnson’s late equaliser.
In mid-week, Wales were narrowly beaten in Brussels; Kieffer Moore’s trademark towering header unable to spark a second half comeback.
But, if the Dragons can win this one, by whatever scoreline, they’ll stay up, with Poland dropping down in their stead.
With this Wales’ final game before their first World Cup appearance for 64 years, can a rocking Cardiff City Stadium roar their team to victory?