Career
Choi made his first major international appearance by winning gold in the individual foil and bronze in the team foil at the 2001 Junior World Fencing Championships. Choi qualified for the 2008 Beijing Olympics for the men"s individual foil competition. On August 13, 2008, he had a 15-14 loss to the eventual silver medalist Yuki Ota of Japan in the round of 16.
Choi then participated in the 2012 London Olympics and on July 31, 2012, he lost to Alaaeldin Abouelkassem in the semi-final, but beat Andrea Baldini in the bronze medal match to finally capture the bronze medal.