After dominating the first 45 minutes at Seoul World Cup Stadium, Korea opened the scoring on the stroke of half-time through Son Heung-min before Kim Young-gwon doubled their advantage in the 63rd minute with the goal that ultimately killed off the Iranian challenge.
The victory meant Korea claimed a first win over Iran in more than a decade as they also dealt the Iranians their first defeat in Group A to mean they go into their final game away to the United Arab Emirates on Tuesday knowing three more points would see them win the group.
While both sides had already secured their passage to the FIFA World Cup, there remained top spot in the standings left to play for as Korea also sought their first win over the Iranians since the 2011 AFC Asian Cup™, with the sides having faced off seven times since.
Both Son and Hwang Hee-chan returned to the Taeguk Warriors’ line-up having missed the previous qualifiers, while Team Melli were without leading scorer Mehdi Taremi, captain Alireza Jahanbakhsh and Saman Ghoddos, with COVID-19 ruling the trio out.
And it was Paulo Bento’s side who had the first chance of note when just before the 10-minute mark Hwang Ui-jo slipped the ball to Son on the left before darting to the near post and heading the Tottenham Hotspur forward’s first-time delivery just wide.
Korea controlled the majority of the play in the opening 45 minutes but an Iranian backline that had conceded just twice in eight matches to date stood firm until first-half stoppage time when Son’s third goal in Group A broke the deadlock.
The Korean captain was first to a loose ball, skipping round Ahmad Noorollahi in the process and advancing goalwards before unleashing a fizzing shot from 25 yards that proved too hot to handle for ‘keeper Amir Abedzadeh who in truth should have done better.
Korea could have doubled their lead shortly after the restart when Hwang Hee-chan raced through the Iranian defense before slipping in Son, only for the forward to be denied by a superb save from the outrushing Abedzadeh, who was then up quickly to keep out Hwang Ui-jo’s follow-up as he went some way towards making amends for his earlier error.
Bento’s side then did open up a two-goal cushion when good interchange play between Lee Jae-sung and Hwang Hee-chan down the left led to the former playing a low ball into the center for defender Kim – up for a corner just moments earlier – to send home from six yards.
The visitors had their best chance of the night with a little over 10 minutes to play when substitute Allahyar Sayyadmanesh delivered an inviting ball in from the right that the diving Sardar Azmoun could only head into the hands of a grateful Kim Seung-gyu.
Azmoun then played a lovely backheel into the path of Sayyadmanesh just seconds later but, with only Kim to beat, the Hull City forward dinked the ball over the ‘keeper and wide.
Son could have killed the game off with six minutes remaining but saw his goalbound effort deflected wide by Hossein Kanani as the game ended 2-0 and the Koreans maintained their unbeaten record.
Korea now sits a point above Iran ahead of Tuesday’s Matchday 10 clash with the UAE in Dubai, where victory would see them win Group A. Iran, meanwhile, return to Mashhad to round off their campaign against Lebanon.