Official Poster – WKN: The Only Kickboxing Federation in History to Organize World Championships in Major Vale Tudo MMA EventsThe WKN is the only kickboxing federation to have organized world championships in Vale Tudo, the brutal predecessor of MMA. This historic feat took place at IVC 10 & 11 “Double Impact” on April 28, 1999, in Brazil, promoted by Sergio Batarelli, a true pioneer of MMA.The event featured three IVC world title fights and the WKN world championship between Eduardo Canuto and Simon Dore. The fight card was legendary, with names like Wanderlei Silva, José “Pelé” Landi-Jons, Carlos “Carlao” Barreto, Eugene Jackson, Johil de Oliveira, Pedro Otavio, Milton Bahia, Nilson “Nilsão” de Castro, and Alexandre Barros.