Iraq coach Jesus Casas said his team was "close to perfect" in stunning Asian Cup favorites Japan 2-1 on Friday to reach the knockout rounds.

Aymen Hussein scored two first-half headers in front of nearly 40,000 in Doha to consign the four-time champions to a first Asian Cup group-stage defeat in 26 matches.

It also put Japan on a potential collision course with South Korea in the last 16, assuming Samurai Blue still progresses.