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Russian-born German mixed martial artist. He has a black belt in Taekwondo, a purple belt in Brazilian Jiu-Jitsu and a green belt in Judo. Siver began training in Sambo and Judo when he was 15 years old and, at 17, moved to Germany where he continued his training with Taekwondo and Kickboxing. That same year, he became the W.A.K.O Amateur Kickboxing Champion of Germany.