Suwon Bluewings were held at home by Kashima Antlers as Nagoya Grampus and FC Seoul also drew 1-1, while last year's runners-up Zob Ahan of Iran proved unstoppable at Al Rayyan.
Suwon Bluewings were held at home by Kashima Antlers as Nagoya Grampus and FC Seoul also drew 1-1, while last year's runners-up Zob Ahan of Iran proved unstoppable at Al Rayyan.
Seongnam Ilhwa will face compatriots Suwon Bluewings in the quarter-finals, while defending champions Pohang Steelers take on Zob Ahan.