He competed at the 2022 World Wrestling Championships, winning the bronze medal[1] in the men's Greco-Roman 82 kg event.

Filchakov was against Burhan Akbudak for which the score was 5-1, in which he was awarded the bronze medal along with Tamás Lévai.

[4] In 2020, he competed in the 82 kg event at the Individual Wrestling World Cup held in Belgrade, Serbia.

He won the silver medal in the 87 kg event at the 2023 Dan Kolov & Nikola Petrov Tournament held in Sofia, Bulgaria.

[7] He won one of the bronze medals in the 82 kg event at the 2024 European Wrestling Championships held in Bucharest, Romania.