Kairat started the 2017 AIBA World Boxing Championships with 5-0 wins over Christopher Florez of the Mexico in the first round, and 4-1 Murodjon Akhmadaliev of Uzbekistan in the second round. In quarterfinals Yeraliyev wins 5-0 Omar El-Hag of Germany and semifinals he wins Peter McGrail of England and advanced to the final. In the final, Kairat Yeraliyev fight Duke Ragan of United States and gave the victory 3-2 and the gold medal.