Dong Hyun Ma

Kim Dong-hyun (; born September 9, 1988), anglicized as Dong Hyun Kim, also known as "The Maestro", is a South Korean mixed martial artist who most recently competed in the UFC's lightweight division. At the turn of 2019, he began to use the ring name Ma Dong-hyun (; anglicized as Dong Hyun Ma; "Ma" as in "Maestro") to better distinguish himself from fellow South Korean mixed martial artist "Stun Gun" Kim Dong-hyun. He lost the fight via knockout due to a slam in the third round.

In his second bout for the promotion, Ma faced Polo Reyes on June 4, 2016, at UFC 199. He lost the back-and-forth fight via knockout in the third round. Despite the loss, Ma was awarded his first Fight of the Night bonus award.

In his third fight for the promotion, Ma faced Brendan O'Reilly on December 3, 2016, at The Ultimate Fighter: Tournament of Champions Finale. Ma won the fight by unanimous decision to earn his first UFC victory.

In his highest profile UFC fight to date, Ma faced Takanori Gomi on September 23, 2017, at UFC Fight Night: Saint Preux vs. Okami. He won the fight via TKO in the first round.

Ma faced Damien Brown on February 11, 2018, at UFC 221. He won the fight by split decision.

Ma faced Devonte Smith on February 10, 2019, at UFC 234. He lost the fight via technical knockout in round one.

Ma faced Scott Holtzman on August 3, 2019, at UFC on ESPN 5. At the weigh-ins, Ma weighed in at 158 lbs, 2 pounds over the lightweight non-title fight limit of 156 lbs. He was fined 20% of his fight purse to Holtzman, and the bout proceeded at catchweight. He lost the fight via TKO due to a doctor stoppage between the second and third round as the swelling on Ma's right eye rendered him unable to continue.

Ma faced Omar Morales on December 21, 2019, at UFC on ESPN+ 23. He lost the fight by unanimous decision.

On March 19, 2020, news revealed that Ma and the UFC had parted ways.

Mixed martial arts record Loss

Omar Morales Decision (unanimous) UFC Fight Night: Edgar vs. The Korean Zombie

Busan, South Korea Loss

Scott Holtzman TKO (doctor stoppage) UFC on ESPN: Covington vs. Lawler

Newark, New Jersey, United States Loss

Devonte Smith TKO (punches) UFC 234

Melbourne, Australia Win

Damien Brown Decision (split) UFC 221

Perth, Australia Win

Takanori Gomi TKO (punches) UFC Fight Night: Saint Preux vs. Okami

Saitama, Japan Win

Brendan O'Reilly Decision (unanimous) The Ultimate Fighter: Tournament of Champions Finale

Las Vegas, Nevada, United States Loss

Polo Reyes KO (punches) UFC 199

Inglewood, California, United States Loss

Dominique Steele KO (slam) UFC Fight Night: Henderson vs. Masvidal

Seoul, South Korea Win

Jung Min Kang Submission (rear-naked choke) Top FC 8: Heart of a Champion

Seoul, South Korea Win

Toshikatsu Harada TKO (punches) Top FC 6: Unbreakable Dream

Seoul, South Korea Loss

Kuniyoshi Hironaka Technical Submission (arm-triangle choke) Vale Tudo Japan - VTJ 6th

Seoul, South Korea Win

Suk-Young Lee KO (punch) Sun FC 2

Busan, South Korea Win

Rekson Rekson TKO (punches) King of Fight 4

Jinju, South Korea Win

In Ho Cha Submission (cattle catch neck crank) Road FC 3: Explosion

Seoul, South Korea Win

Yuta Nakamura TKO (doctor stoppage) Gladiator 18

Fukuoka, Japan Win

Yong Jae Lee Submission (rear-naked choke) KF-1: MMA World Competition

Seoul, South Korea Loss

Yoshitomo Watanabe Decision (unanimous) Deep 49: Impact

Tokyo, Japan Loss

Shigetoshi Iwase Decision (unanimous) Deep 48: Impact

Tokyo, Japan Win

Hiromu Nagado Submission (rear-naked choke) KOF: The Beginning of Legend

Seoul, South Korea Loss

Hidetaka Monma Decision (unanimous) Deep: Fan Thanksgiving Festival 2

Seoul, South Korea Draw

Vaughn Anderson Draw AOW 14: Ground Zero

Seoul, South Korea Win

Lubomir Guedjev TKO (doctor stoppage) AOW 13: Rising Force

Seoul, South Korea Draw

Sang Il Draw Spirit MC 18: The Champion

Seoul, South Korea Loss

Ho Jin Kim Decision (majority) Spirit MC 17: All In

Seoul, South Korea Win

Hoo Sun Lee Submission (guillotine choke) Spirit MC 16: Clash of Pride

Seoul, South Korea Draw

Jung Hwan Cha Draw Spirit MC 15: Come Back Home

Seoul, South Korea Loss

Yoon Young Kim Submission (armbar) Spirit MC Interleague 6: The Road

Seoul, South Korea Win

Ki Chool Jung Decision (unanimous) Spirit MC Interleague 5

Seoul, South Korea Win

Dae Gun Kim Submission (triangle choke) Spirit MC Interleague 5

Seoul, South Korea Win

Myeon Kwang Min Decision (unanimous) Spirit MC Interleague 5

Seoul, South Korea