Riznyk is a product of FC Vorskla Youth Sportive School from his native Poltava. In July 2016 he was promoted to the Vorskla main squad to compete in the Ukrainian Premier League Reserves. And in September 2019 Riznyk was promoted to the main-squad team of FC Vorskla in the Ukrainian Premier League.
On 10 February 2023, Shakhtar Donetsk announced the signing of Riznyk on a five-year contract.[4]
International career
Youth
From 2011, until 2012, Riznyk has been part of Ukraine at youth international level, respectively has been part of the U19. U20 and U21 teams and he with these teams played four matches. He was a part of the Ukraine U20 that won the 2019 FIFA U-20 World Cup, even if he not played any game and spent a time on the bench.
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