Plays worse on international cups

Found this negative trait on one of my youth players. That exists if he forgets to put his underwear before playing a big club. But
that is unreal for playing a swiss team in the Euro-League …

This is just to add some fun into the mix…some players do play worse when playing clubs from other countries as they could be facing a different play style from what they’re used to. The example you gave is also covered by the “plays worse against stronger teams” trait.