South Korean import from the Seattle Mariners organisation who is playing with the Adelaide Bite for the 2012-13 ABL season. Choi started in the minors in 2010, but sat out 2011 due to back surgery. 2012 saw him recovering at the Clinton LumberKings in the A level Midwest League, so obviously the Mariners saw value in extending his opportunities by playing ball Down Under in the American winter. I know that when I saw him play, he was getting a lot of physiotherapy during the games, so unsure how well the back is recovering.
Update: Thanks for the comment on the correct Hangul translation!