There was a official Call of Duty LAN in Poland 15.10.16 with a prize pool of 10 000 EURO.
First team OneHash.com won 5000 EURO / 4 players.
I'm linking you all of the information here so you can add missing data :)
Link to the tourney bracket and results on ESL :
https://play.eslgaming.com/blackops3/europe-ps4/codbo3-ps4/major/cwl-poland-faza-finalowa/rankings/
Article on ESL in Polish / team photo
https://play.eslgaming.com/poland/cwlpoland/news/267941/Call-of-Duty-World-League-OneHash-com-mistrzem-/
Info about the tournament on cod wiki.
http://cod.esportswikis.com/wiki/ESL/CWL_Poland/2016_Season/Finals

Information about the players from Winner Team (OneHash.com) :
Adrian "MeowMjau" Muszynski ( born : 95-04-25 )
Jan "Af3cion" Rowicki ( born : 98-01-09 )
Dawid "BraneeY" Branicki ( born : 97-04-14 )
Jakub "GraphGunnar" Dunajski ( born : 96-08-13 )