And after the Sun Online told how Russian yobs had met up with Argentinian hooligans to plot bloody attacks on our fans.
While crowd trouble still breaks out at Russian league matches intense policing and CCTV cameras has forced the most yobs “into the woods”.
The bulk of hooligan clashes now take place in remote forests and on fields, where groups from rival clubs go toe-to-toe in brutal brawls.
These bizarre last man standing "auditions" are now being used to pick the "best of the best" ahead of this summer's tournament.
DOZENS of hooligans clash in shocking footage as Manchester United and Liverpool head for Moscow
The unwritten rules are few: no weapons, stop when commanded by a referee and stamping on heads is strictly frowned upon.
Potential recruits are invited to trial bouts, starting with seven-on-seven affairs, and then graduating to 15 a side, or 20. Elite fights can involve 80-on-80 brawls.
Injuries are expected with concussions, broken legs, cracked jaws and fractured skulls all commonplace.
“If they haven’t yelled, ‘Stop’ you can continue,” said Alex, a member of RB Warriors, a well-known group that supports CSKA Moscow.
“You need to beat them so that a person won’t stand up again. Because if they stand up, it means they can attack you from behind, he revealed.
"I will never in my life will jump on someone’s head. Only those who are not strong do that.”