At the age of 17, he fled from his homeland to Poland and continued practicing martial arts, while adding other combat styles to his repertoire such as Taekwondo, Shotokan Karate, Wrestling and Boxing soon after his arrival.

Later he also became interested about becoming a mixed martial artist and began training Muay Thai, Combat Sambo, and Brazilian Jiu-Jitsu.

As of December 2011, Khalidov has fought eleven times under the KSW banner, though never featuring in a tournament, instead fighting individually such opponents as Daniel Tabera and Matt Lindland.

Following the collapse of EliteXC, Khalidov has expressed interest in a hasty return to KSW, as previously outlined by his signing with ProElite in favor of non-exclusive contract status.

During the rest of the fight he had 6 submission attempts including 4 guillotine chokes, 1 ankle lock and 1 heel hook, but couldn't force the tap from Sakurai.

Mamed Khalidov was expected to face Thales Leites and later Matt Lindland at KSW XV[4] However, both fighters were pulled from the card.

Khalidov next faced Melvin Manhoef at KSW 23 on June 8, 2013, winning the fight by front choke in the first round.

On July 30, 2018, it was announced that Khalidov had vacated his middleweight championship belt in order to pursue a rematch against KSW Light Heavyweight champion Tomasz Narkun.

[7] In September 2019, news surfaced that Khalidov will be returning from retirement to face Scott Askham in a catchweight bout at KSW 52 on December 7, 2019.

[20] In June 2019 news surfaced that the police arrested Khalidov due to alleged illegal import of stolen cars.