K League Championship
In the 2009 season, Jung Sung-ryong continued to establish himself as the first choice goalkeeper for Seongnam Ilhwa Chunma. His first clean sheet came on 14 March 2009, in a 6–0 win over Ulsan Hyundai. Four days later, on 7 October 2009, Jung Sung-ryong helped the club beat Daejeon Citizen 1–0 to reach the Korean FA Cup Final. He also helped Seongnam Ilhwa Chunma reach the K League Championship Play–Off after beating Daegu FC 3–0 on the last game of the season. Seven days later in the Korea Cup FA Cup Final, however, Jung Sung-ryong started the whole game, as the club lost on penalty–shootout against Suwon Samsung Bluewings after the game went extra time following a 1–1 draw. In the K League Championship Play–Off, He helped Seongnam Ilhwa Chunma reach the final after beating Incheon United on penalty shootout and earning a clean sheet in the next two matches against Chunnam Dragons and Pohang Steelers. However, the club lost 3–1 to Jeonbuk Hyundai Motors in the K League Championship Final and contributed to the Seongnam Ilhwa Chunma's 2009 K League runners-up campaign.