 Since returning to the first team, he regained his first choice goalkeeper status and featured in a number of matches despite facing competition from No Dong-geon.This lasted until 6 August 2015, when it was announced that Jung Sung-ryong would undergo four weeks of basic military training.After returning from military training on 3 September 2015, he didn't make his return to the first team until 12 September 2015, where he played the whole game and kept a clean sheet, in a 1–0 win over Incheon United.