Piers Postma ha enfrentado a 69 oponentes a lo largo de su carrera.

Player Team(s) Games
Maid Adrovic
U16 Luxembourg (Euro U16 B)
1
Endurance Aiyamenkhue
U16 Netherlands (Euro U16 B)
1
Jayden Anike
U16 Netherlands (Euro U16 B)
1
David Balog 1
Djairo Bernardina
U16 Netherlands (Euro U16 B)
1
Charel Brettner
U16 Luxembourg (Euro U16 B)
1
Simon Brzak 1
Bruno Bubalo
U16 Croatia (Euro U16 B)
1
Sean Bugeja
U16 Luxembourg (Euro U16 B)
1
Caleb Burkhardt
U16 Denmark (Euro U16 B)
1
Alexi Cauvy
U16 Switzerland (Euro U16 B)
1
Jamie Dada
U16 Denmark (Euro U16 B)
1
Joost Dalgaard-Duus
U16 Denmark (Euro U16 B)
1
Bink De Goede
U16 Netherlands (Euro U16 B)
1
Mika Demuth
U16 Luxembourg (Euro U16 B)
1
Kamary Diakite
U16 Switzerland (Euro U16 B)
1
Matej Galic
U16 Croatia (Euro U16 B)
1
Jason Hartz
U16 Luxembourg (Euro U16 B)
1
Viktor Horvat
U16 Luxembourg (Euro U16 B)
1
Roko Jemo
U16 Croatia (Euro U16 B)
1
Niko Jerkic
U16 Croatia (Euro U16 B)
1
Toni Josipovic
U16 Croatia (Euro U16 B)
1
Matej Jukic
U16 Croatia (Euro U16 B)
1
Max Jungers
U16 Luxembourg (Euro U16 B)
1
Elikia Kambila
U16 Switzerland (Euro U16 B)
1
Borna Katanovic
U16 Croatia (Euro U16 B)
1
Anton Katholm
U16 Denmark (Euro U16 B)
1
Benjamin Koolmees
U16 Netherlands (Euro U16 B)
1
Nikos Koulisianis 1
Adam Kresina 1
Abishai Kumarasamy
U16 Switzerland (Euro U16 B)
1
Gabriel Kuzmic
U16 Croatia (Euro U16 B)
1
Remi Lambelet
U16 Switzerland (Euro U16 B)
1
Luka Latinovic
U16 Luxembourg (Euro U16 B)
1
Dominic Mack
U16 Netherlands (Euro U16 B)
1
Simeon Maret
U16 Switzerland (Euro U16 B)
1
Jan Mondschein 1
Carl Møller
U16 Denmark (Euro U16 B)
1
Edwin Nanninga
U16 Netherlands (Euro U16 B)
1
Kabir Narasimhan
U16 Switzerland (Euro U16 B)
1
Samuel Nohel 1
Vaclav Nosek 1
Noah Nørgaard
U16 Denmark (Euro U16 B)
1
Konan Oth
U16 Luxembourg (Euro U16 B)
1
Austin Ouko
U16 Switzerland (Euro U16 B)
1
Leo Pariat
U16 Switzerland (Euro U16 B)
1
Michael Prokysek 1
Elyjah Rebetez
U16 Switzerland (Euro U16 B)
1
Klark-Luca Riethauser
U16 Switzerland (Euro U16 B)
1
Raaf Roelofsen
U16 Netherlands (Euro U16 B)
1
Tobias Saat
U16 Netherlands (Euro U16 B)
1
Deni Sabotic
U16 Luxembourg (Euro U16 B)
1
Josip Santro
U16 Croatia (Euro U16 B)
1
Gerry Schuder Minden
U16 Luxembourg (Euro U16 B)
1
Ardian Seba
U16 Croatia (Euro U16 B)
1
Alex Serreau
U16 Switzerland (Euro U16 B)
1
Daniel Sertic 1
Jakub Sevcik 1
Ante Skelin
U16 Croatia (Euro U16 B)
1
Tonko Skugor
U16 Croatia (Euro U16 B)
1
Lukas Smazak 1
Philippe Stoffel
U16 Luxembourg (Euro U16 B)
1
Magnus Sørensen
U16 Denmark (Euro U16 B)
1
William Tholstrup
U16 Denmark (Euro U16 B)
1
Chermano Van La Parra
U16 Netherlands (Euro U16 B)
1
Eise Van Wayenburg
U16 Netherlands (Euro U16 B)
1
Wessel Vankan
U16 Netherlands (Euro U16 B)
1
Marek Volf 1
Mads Ziegler
U16 Denmark (Euro U16 B)
1