Judo
Sambo

Sambo is influenced by judo combined with wrestling techniques, and striking in case of combat sambo. Vasili Oshchepkov was one of the first European judo black belts under Kano. Oshchepkov went on to contribute his knowledge of judo as one of the three founders of Sambo, which also integrated various international and Soviet bloc wrestling styles and other combative techniques. Oshchepkov was executed during the political purges of 1937 and judo was banned for decades until its inclusion in the 1964 Olympics, where sambists won 4 bronze medals. In their History of Sambo, Brett Jacques and Scott Anderson wrote that in Russia "judo and SOMBO were considered to be the same thing"—albeit with a different uniform and some differences in the rules.
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