 Oh is a draftee from the 2010 K-League draft intake, and joined Daegu FC for the 2010 season.He earned a yellow card in his debut match, a loss in a K-League against the Gwangju Sangmu on 27 February 2010, and followed this up with a red card in his following game, his debut in the K-League (a loss to Jeju United).Despite this somewhat intemperate start to his professional footballing career, he has established himself as a regular in the first team squad.