Many issues with this game now.
They say you can build a team upon the blockchain, yet players are randomly changed from position to position.
2 EXAMPLES. I bought immobile and gomes (lazio,atalanta). Both listed in midfield. Both players have been changed to forwards, midway through season.
Basically building a team is pointless as a third party can change the rules! at any given time!!!
Thus completly centralised. Nothing to do with cards on blockchain.
The position of the players is supplied by Sportradar together with the data. We can only check if this is a mistake (and if so correct it) or if it is the position declared by the respective teams for their players.