Hong Ji-hoon

In 2006, he won a gold medal at the BWF World Junior Championships in the boys' singles event. He defeated Tommy Sugiarto of Indonesia with the score 21-13, 10-21, and 21-16. He became a semi-finalist of the Vietnam Open tournament in the men's doubles event. He and partner Choi Ho-jin were defeated by their teammates Yoo Yeon-seong and Jeon Jun-bum with the score 21-16, 21-19. He also became the runner-up of the Mongolian Satellite tournament in men's singles.

In 2007, he won his first senior title at the Indonesia International Challenge tournament in men's singles. He reached the final round after beating Indra Bagus Ade Chandra of Indonesia 21-16, 21-11. In the final round, he defeated his compatriot Lee Cheol-ho 21-15, 11-21, 21-11. In 2010, he won a silver medal with Korea national badminton team at the Asian Games in the men's team event held in Guangzhou, China. In the final round, they were defeated by China national badminton team in 3-1.

In 2011, he became the champion of the Turkey International tournament in men's singles. Hong had to work hard to beat Malaysia’s Tan Chun Seang in three hard games 22-24, 21-12, 21-16. In 2012, he competed at the Thomas Cup tournament with the Korea national badminton team held in Wuhan, China. They were defeated by the China national badminton team 3-0.

In 2013, he was runner-up at the Korea Masters Grand Prix Gold in men's singles after being defeated by his teammate Lee Hyun-il 21-18, 21-12. He represented Kyonggi University competed at the 2013 Summer Universiade, and won a gold medal in the men's team event and a bronze medal in the men's doubles event.