Career
He formerly played for Jeonbuk Hyundai Motors, Gwangju Sangmu Bulsajo, Shenyang Dongjin and Goyang KB Kookmin Bank Football Club. Sung transferred to Shenyang Dongjin in January 2011.
He formerly played for Jeonbuk Hyundai Motors, Gwangju Sangmu Bulsajo, Shenyang Dongjin and Goyang KB Kookmin Bank Football Club. Sung transferred to Shenyang Dongjin in January 2011.