Kawasaki Frontale's hopes of reaching the quarterfinals of the Asian Champions League suffered a blow after being sunk by an injury-time strike in a 3-2 defeat at home to FC Seoul in the round of 16 on Wednesday.

Kawasaki twice led through goals from Yu Kobayashi and Renato, but Kim Chi-woo leveled with a blistering strike and Yun Il-lok won it in the third minute of added time to take control ahead of the next leg next week.

"The game is over now and we just have to regroup and try our best (in the second leg)," said Kobayashi. "We know we have to go and win by two goals to qualify for the next round and that is all we will be thinking about."