someone explain this to me please...

[fmldotcom]

I don't get it....

round 7 the guy played with illegal formation won the match 3-1 yet he got 45% possession.

round 8 he lost 0-4 using the same illegal formation vs another illegal formation but he only got 20% possession this time...

What exactly is illegal formation? Why the hell Nordeous wont explain this themselves. I know the fun of the game is figure things out by yourself but their illegal rules are perfectly legal in the real world...