Career
Narantungalag has fought the likes of Masato, Buakaw Banchamek, and Albert Kraus in K-1 kickboxing. He first began Judo as a child, before moving to kyokushin as a teenager and would began training mixed martial arts, kickboxing, and Brazilian jiujitsu when he moved to Japan. Narantungalag had a slow start to his mixed martial arts career, losing his first two professional bouts to UFC veteran Norifumi Yamamoto in 2004, and Toshikazu Iseno in 2006, via KO and unanimous decision respectively.
After the impressive victories, Narantungalag signed with upstart promotion Sengoku Raiden Championship.
World Victory Road
After signing with the promotion, Narantungalag faced Pride Football Club and UFC veteran Akihiro Gono at WVR: Sengoku Raiden Championships 14 on August 22, 2010. In his second fight with the promotion, Narantungalag faced Kazunori Yokota at WVR: Soul of Fight in the promotion"s final event on December 30, 2010.
Legend Fighting Championship
Narantungalag faced Adrian Pang at Legend Football Club 6 on October 30, 2011, for the LFC Lightweight Championship. In his first title defense within the promotion, Narantungalag faced Korean prospect Yui Chul Nam at Legend Football Club 8 on March 30, 2012.
He successfully retained the championship, winning the fight via second round guillotine choke.
Foreign his next fight in the promotion, Narantungalag faced Koji Ando at Legend Football Club 11 on April 27, 2013. He would lose the championship bout in the third round, after suffering a broken ankle. ONE Championship
In April 2014, Narantungalag signed with Singapore based promotion ONE Championship.
Narantungalag faced Koji Oishi for the ONE Featherweight Championship at ONE Football Club 19: Reign of Champions on August 29, 2014.
Fight Matrix
2010 Most Lopsided Upset of The Year versus Akihiro Gono on August 22
Legend Fighting Championship
Legend Football Club Lightweight Championship (One time)
One successful title defense
Mongolian Mobile Marketing Association Championship
ONE Championship
ONE Featherweight Championship (One time).