|Real name||Yo-Sam Choi|
|Rated at||Light flyweight|
|Born||March 1, 1972
Jeongeup, Jeollabukdo, South Korea
|Died||January 3, 2008
|Wins by KO||19|
Choi turned pro in 1993 and won the WBC light flyweight title in 1999 with a decision win over Saman Sorjaturong. He successfully defended the title three times before losing it to Jorge Arce by a 6th round technical knockout in 2002. In 2003, he lost a decision to Beibis Mendoza for the interim WBA light flyweight title. In 2004, he moved up in weight to take on Lorenzo Parra for the WBA flyweight title and lost a decision.
On December 25, 2007, he successfully defended the WBO Intercontinental flyweight title with a unanimous decision victory over Heri Amol. In the 12th round, Choi was dropped with five seconds remaining, but beat the count and went on to win the fight. He collapsed while still in the ring after the bout and was rushed to the Soonchunhyang University Hospital immediately after the fight in order to undergo emergency brain surgery. Choi was pronounced brain-dead on January 2, 2008, and died on January 3, 2008, when he was removed from a ventilator. LeeSSang made a song dedicated to him in their 5th album called CHAMPION.
His organs were donated to six patients with approval from his family. This action led the South Korean Government to award Choi with a medal.
- "Choi Yo-sam officially declared dead". Sports Illustrated. 2008-01-03. Archived from the original on 2008-01-06. Retrieved 2008-01-13.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
- "South Korean boxer Choi Yo Sam declared dead". nytimes.com. Retrieved 2015-07-19.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
|WBC Light Flyweight Champion
October 17, 1999 – July 6, 2002