Before Ronda Rousey made the armbar famous, there was Dong Sik Yoon (윤동식). An uncrowned, but master judoka from South Korea that made a late transition to mixed martial arts, Yoon’s MMA career started off rocky with 4 consecutive losses. However, showing the heart of a champion, Yoon turned things around in a huge way when he defeated the powerful Melvin Manhoef by armbar. With persistence and durability in the ring, Yoon continued to find success in his MMA journey and even made the armbar his signature finishing technique. Korean MMA Fans, be sure to check out this awesome highlight video of Dong Sik Yoon. He will make you proud!