In the Champion's League final competition 2 weeks ago, 5 months after the game was over. And all of a sudden, 11 guys liked the post within the last 24 hours:
There are other examples, but you get the idea. All those accounts have ranks below 10 and I think it would be smart for you to also investigate all those related accounts. If someone cheats for likes to reach higher ranks to join freerolls, he'll be even more likely to cheat for money during the games.