I made a private league to play with my friends. I set the league "open" two minutes to speed up the joining progress. Unfortunately a random player joined in. I would like to kick him out. How could i do that?
It's only possible for the League Moderator to kick someone out of their league unless they go inactive for 72 hours or more.
Even if you open your league for 2 secs it could be open for up to 5 minutes on database. So for next time you don't need to open the league since you can send them invitations by going to their profile or by going to your friends list.