[3] Group B runners-up Uzbekistan had made a positive start as lone striker Bakhodir Nasimov and Sanjar Tursunov tested South Korea goalkeeper Kim Jin-hyeon inside the first 20 minutes before Odil Ahmedov volleyed over on the edge of the six-yard area from Vitaliy Denisov's left wing cross.
South Korea then enjoyed their own stroke of luck with 12 minutes remaining as Lutfulla Turaev headed wide at the back post from Sardor Rashidov's chipped cross with the goal at his mercy and goalkeeper Kim struggling to recover.
Group A winners South Korea were able to finish the end of normal time on top, but after Nam failed to connect with the goal at his mercy inside the final 10 minutes, the first draw of the tournament sent the tie to extra-time.
And with just over a minute remaining at the end of the second half of extra-time Son repeated the feat as the forward fired high into the roof of the net from Cha Du-ri's pass with Uzbekistan caught short at the back as they searched for an equaliser.
[8][9] The Chinese strike-force of Sun Ke and Wu Lei, with three goals from three matches in the group stage, caused problems for the Australian defence, calling goalkeeper Mathew Ryan into action several times with pace and ferocity.
The deficit forced China to come out, giving Australia more space to work with and it was Cahill again who capitalised five minutes past the hour, powerfully heading home a cross from left-back Jason Davidson to make it 2–0 and effectively put the game out of their opponents' reach.
[15] But after Iran substitute Vahid Amiri drilled his penalty onto the left-hand upright, Shaker held his nerve to claim victory for Iraq and take them into the semi-finals with South Korea at the Stadium Australia in Sydney.
But on 56 minutes, Iraq got the equaliser they had been threatening as Alaa Abdul-Zahra's wicked cross from the left wing evaded defenders and attackers alike before Yasen latched onto the ball at the far post and drove his low angled shot through a group of players and into the net.
And the deadlock was blown open in just the second minute of extra time as cross from Ismail saw the ball clip off Haghighi's outstretched leg and pounced upon by Mahmood whose stopping header found the back of the net for his eighth goal in AFC Asian Cup competitions to put Iraq 2–1 up.
But with two minutes remaining there was a further twist to the tail as once again from a Teymourian corner, Iran caused consternation in the Iraq defence as Javad Nekounam cannoned his header off the woodwork and Ghoochannejhad was on hand to head home to take the game to penalties.
[20] After the match, the Iranian Football Federation lodged a formal complaint to FIFA after Iraqi midfielder Alaa Abdul-Zahra tested positive for the banned stimulant methylhexanamine, in results that were verified by a WADA-approved laboratory in Cologne.
Javier Aguirre named an unchanged side for the fourth game in a row while the United Arab Emirates were without the suspended Walid Abbas, who was ruled out after picking up a second yellow card of the tournament in the 1–0 loss against Iran in the group stages.
The two-time champions, who have not won the continental title since 1960 would meet either hosts Australia or 21st Arabian Gulf Cup winners the United Arab Emirates on 30 January after goals from Lee Jung-hyup and Kim Young-gwon took the Taeguk Warriors past the Iraqis.
[29] South Korea last played in the final of the AFC Asian Cup in Qatar in 1988, when they lost on penalties to Saudi Arabia, and Stielike's side avenged a semi-final defeat at the hands of Iraq when Younis Mahmoud and his teammates went on to win in 2007.
[30] The Koreans wasted little time taking the initiative, with Han Kyo-won narrowly missing with a diving header from Ki Sung-yueng's in-swinging free kick from the left while Nam Tae-hee tried his luck from distance, only to send the ball over the bar.
[31][32] The 23-year-old Sangju Sangmu forward rose highest to reach Kim Jin-su's free kick from close to the right touchline before Hassan could punch clear, the header sending the Korean fans amongst the 36,053 crowd into raptures in the 20th minute.
Lee Jung-hyup was involved again, this time chesting the ball down on the edge of the area into the path of defender Kim Young-gwon and the Guangzhou Evergrande man's bouncing left footed shot skidded past Hassan and into the corner of the goal.
And it was Spiranovic's central defensive partner Sainsbury who handed Australia the ideal start inside the first three minutes as the centre-back powered a downward header from Massimo Luongo's right wing corner past Majed Naser.
[40] With both coaches retaining the majority of their first team and only making minor changes to their starting line-ups following their semi-final defeats earlier in the week, it was the UAE's exciting front three which helped Mahdi Ali's side open the scoring as Mabkhout freed Omar Abdulrahman following a swift counterattack and Khalil was on hand to produce a first-time finish inside the penalty area from the perfectly weighted through ball.
Three minutes before the hour mark, the UAE completed their comeback as Ibrahim was sent off after hauling down Mabkhout inside the area following a mistake by goalkeeper Hamed and the striker picked himself up to coolly beat the Iraq custodian from the resulting penalty to move one goal clear of Jordan's Hamza Al-Dardour and teammate Khalil at the top of the goalscoring chart.