Lee scored 13 minutes from time to level the scores ahead of the second leg in Ulsan next Tuesday with Jeonbuk’s Brazilian striker Tiago Orobo having missed a first-half penalty.

Jeonbuk went in front when Song swept a close-range finish past Jo Hyeon-woo after Lee Dong-jun was released down the right to deliver an inch-perfect cross that unlocked the defence.

The home side squandered the chance to double their lead after Ulsan’s Lee Myung-jae upended Lee Dong-jun inside the penalty area but Tiago clipped the bar with his spotkick.

Jeonbuk goalkeeper Kim Jeong-hoon ensured the hosts retained their lead at the break when he pushed Um Won-sang’s added time attempt around the post.

With 13 minutes remaining, however, Ulsan pulled level as Lee Myung-jae capitalised on an error in the penalty area by Jeong Tae-wook.

The ball landed kindly at the feet of Lee after a slip by Jeong and he sidestepped the defender’s attempt to recover before thumping the ball into the roof of the net.

Um then missed a chance to give Ulsan the lead when he shot across the face of the goal.

The draw comes after Al-Ain of the United Arab Emirates claimed a 1-0 home win in the first leg of their quarterfinal with Saudi Arabia’s Al-Nassr yesterday.

Saudi Pro League pair Al-Hilal and Al-Ittihad meet in the first leg of their last-eight tie today, while Harry Kewell-coached Yokohama F Marinos of Japan will face Shandong Taishan in China tomorrow.