Urawa Reds face a tall order at home next week against Jeju United after losing to the K-League side 2-0 in the first leg of the Asian Champions League round of 16 on Wednesday.
Marcelo Toscano opened the scoring early and Jin Seong-uk locked up the win with a second for the hosts in the 92nd minute in the first meeting between the two clubs in the continental club championship.
Reds, ACL champions in 2007, now need at least a 2-0 victory on May 31 at Saitama Stadium to keep their quarterfinal hopes alive. However, Reds, have only four wins in 15 games against South Korean sides in the competition.