Interestingly we have two AU vs PL pairs in the playoffs (P1 and P6) - and on top of that, the winners will face off each other in the second round!

If you look at countries represented here:
PL - 6
US - 2
AU - 2
BG - 1
CZ - 1
GH - 1
PH - 1
PK - 1
RO - 1

They represent 5 continents: Europe (9), Asia (2), Australia (2), North America (2) and Africa (1)