 After a year and a half away from playing in the national team, Jung made his return to the starting line-up on 22 January 2010, where he kept a clean sheet, in a 1–0 win over Latvia.He later kept two more clean sheets, which were against Ecuador and Japan.It was announced on 1 June 2010 that Jung Sung-ryong was included for the 23-men squad in the 2010 FIFA World Cup in South Africa.