how come its possible in league

[cookizzz]

Many people complains that they often play with higher level teams in cups. The game proves that a lower level team can beat a higher level one. I also lost at least one such cup game.

[RJSlow]

Many people complains that they often play with higher level teams in cups. The game proves that a lower level team can beat a higher level one. I also lost at least one such cup game.

its not a cup though, its a league game. And what Cat said, the manager and club levels can be different. Look at his club details to see the club level