On August 25, 2015 Pollack won a bronze medal in the 2015 World Judo Championships in Astana, Kazakhstan after defeating Davaadorjiin Tömörkhüleg of Mongolia. During that day he also beat Georgii Zantaraia of Ukraine, ranked number one in the world. He became the sixth Israeli to win a medal at the World Judo Championships, joining Yael Arad (1991, bronze; 1993, silver), Oren Smadja (1995, silver), Arik Zeevi (2001, silver), Alice Schlesinger (2009, bronze), and Yarden Gerbi (2013, gold; 2014, silver).