At the age of six, Heydarov's father enrolled him in the judo section of the Specialized Children and Youth Sports School of Olympic Reserves No.

Heydarov also named Irish mixed martial artist Conor McGregor as a hero of his.

And in the same year he became the European champion in judo in the weight category up to 73 kg, having beaten Musa Mogushkov from Russia in the final.

[9] At the 2017 World Championship, which was his debut, Heydarov reached the semifinals, where he lost to Soichi Hashimoto of Japan.

In October 2017, he became the winner of the World Youth Championship (U-21) in Zagreb, where he defeated Bilal Çiloğlu from Turkey in the final.

At the 2019 pre-Olympic World Championships, which was held in Tokyo, he won a bronze medal, defeating an opponent from Tajikistan Behruzi Khojazoda in a duel for third place.