Jurgen Klinsmann overcame Roberto Mancini as South Korea advanced to the quarter-finals of the Asian Cup on penalties after a dramatic draw against Saudi Arabia on Tuesday.

South Korea won 4-2 in the shoot-out after the round-of-16 match had ended 1-1 after extra time.

Defeat will be particularly hard for Mancini to take as Saudi Arabia led 1-0 deep into stoppage time at Education City Stadium through Abdullah Radif's 46th-minute strike.

Cho Gue-sung levelled the game in the 99th minute to send it into an additional period, then South Korea goalkeeper Jo Hyeon-woo was the hero in the shoot-out when saving penalties from Sami Al Naji and Abdulrahman Ghareeb.

Hwang Hee-chan converted the winner from the spot to send his country through to the last eight and a match against Australia on Friday.

Uzbekistan are also into the quarter-finals after beating Thailand 2-1, setting up a clash with hosts and defending champions Qatar.

Azizbek Turgunboev put Uzbekistan ahead in the 37th minute, controlling Diyor Kholmatov's diagonal pass on his chest and volleying low past Patiwat Khammai.

Thailand equalised through Supachok Sarachat's curling effort from outside the box 13 minutes after half-time, but it took just seven more minutes for Uzbekistan to regain the lead with what proved to be the decisive goal from Abbosbek Fayzullayev, who struck from distance to beat Khammai.

Ali Albulayhi scored in stoppage time as Saudi Arabia came back to beat Oman 2-1 in the Asian Cup on Tuesday.

In a dramatic conclusion to the match at Khalifa International Stadium, Albulayhi's headed winner was first ruled out for offside and then given after a VAR check.

To add to the chaotic scenes, Oman initially thought the offside call had been upheld and tried to restart the game with a free-kick.

But when referee Shaun Evans pointed to the centre spot, it sparked a mass celebration among the Saudi players and substitutes in front of fans as it appeared they believed the full-time whistle had blown, causing an extended delay before the match could resume.

Oman had led through Salaah Al Yahyaei’s 14th-minute penalty and withstood sustained pressure from Saudi Arabia until Abdulrahman Ghareeb scored three minutes after coming on as a second-half substitute.

His brilliant individual goal in the 78th minute spared Saudi coach Roberto Mancini defeat in his team's opening Group F game.

Starting a run from outside the box, he showed speed to burst away from Oman captain Harib Al Saadi and then dancing feet to beat two players and sweep a low shot past goalkeeper Ibrahim Al Mukhaini.

Albulayhi's winner came in the sixth minute of stoppage time when Ali Lajami flicked on a corner for him to head in from close range.

In the other Group F game, Supachai Chaided scored both of Thailand's goals in a 2-0 victory over Kyrgyzstan.

Thailand dominated at Abdullah bin Khalifa Stadium and could have scored twice early on when Supachok Sarachat hit the post and Suphanat Mueanta had an effort cannon off the crossbar.

Supachai made his team's superiority count in the 26th minute when he converted on the rebound after Bordin Phala's shot was saved by Kyrgyzstan goalkeeper Erzhan Tokotaev.

He scored his second three minutes after the break with another close-range finish as Kyrgyzstan struggled to deal with a cross into the box.