 For the second time this season, on 24 October 2018, he was sent–off in the 64th minute, as Kawasaki Frontale lost 3–2 to Montedio Yamagata in the quarter–final of the Emperor's Cup.Despite this, Jung Sung-ryong helped the side win the league for the second time in a row.At the end of the 2018 season, he had made thirty–eight appearances in all competitions.