In 2010 Zantaraia won the silver medal at the 2010 World Judo Championships in Tokyo, unable to defend his title against Rishod Sobirov who would retain his title in 2011, while Zantaraia claimed the bronze that year in Paris. Zantaraia would however win his first European title at the 2011 European Judo Championships in Istanbul beating Betkil Shukvani in the final. In 2013 Zantaraia won another bronze medal at the 2013 World Judo Championships in Rio de Janeiro.