Ala’a Aldin Dali came off the bench for the second game in a row to score a decisive goal for Hakeem’s side, netting the winner against Japan three days after scoring a late equaliser against Qatar in Syria’s opening game in Group B.

Dali raced half the length of the field before slotting past Japanese goalkeeper Keisuke Saito to leave the Japanese rooted to the bottom of Group B without a point from their first two games and with no way to progress beyond the opening phase of the competition.

With one game each still to play, the result sees Saudi Arabia move to four points following their impressive defeat of Japan on Matchday One, with Qatar – in the wake of their draw with Syria – two points adrift of their regional rivals.

Saudi Arabia complete their group stage fixtures on Wednesday when they face Syria, while Qatar will tackle Japan on the same day.

First half goals from Lee Dong-jun and Cho Gue-sung gave Kim Hak-bum’s side a two-goal half-time buffer, but Reza Shekari’s effort nine minutes after the interval meant the Koreans had to negotiate a difficult period in order to extend their winning start to the competition.

Their perfect tally of six points from two matches means they are sure to advance to the knockout stage no matter what happens in Wednesday’s match against Uzbekistan, while Iran’s hopes of ending a 44-year Olympic qualification drought now weighs heavily on their final group stage fixture against China PR.

Captain Islom Kobilov scored one penalty kick and had another saved, before Nurillo Tukhtasinov came off the bench seal an important win for Ljubinko Drulovic’s side with 10 minutes remaining.

China PR’s second defeat in succession means they can no longer advance to the knockout stage, while Uzbekistan’s relatively handsome tally of four points from two matches means they require only a draw from their final group stage match against already qualified Korea Republic to advance.

Jordan got their campaign underway with a 2-1 victory over DPR Korea on Friday, thanks to strikes from Mohammed Bani Atieh and Omar Hani. Meanwhile, Vietnam were held to a goalless draw by the UAE on the same day.

The Whites held 2018 runners-up Vietnam to a goalless draw in their campaign opener, and victory against DPR Korea would put them well on track to reach the quarter-finals ahead of an anticipated all West Asia clash with Jordan on the final matchday of the group stage.