CHONJU, South Korea, Sept 27 (Reuters) - A late goal from Choi Sung-kuk gave Ulsan Tigers a 3-2 away win over South Korean rivals Chonbuk Motors in the first leg of their Asian Champions League semi-final on Wednesday.
Ulsan captain Yoo Kyoung-youl gave the visiting K-League champions the lead after six minutes with a towering header only for Ze Carlo to level from the spot in the 27th.
Brazilian defender Vinicius fired home a free kick from 30 metres to restore Ulsan's advantage 10 minutes later but Chonbuk equalised again through Kim Jung-nam just after the break.
The game appeared to be headed for a draw until Choi snatched the winner for Ulsan with eight minutes left in Chonju.
The Tigers will hope to have South Korea striker Lee Chun-soo back from injury for the return leg in Ulsan on October 18.
Kuwait's Al Qadisiya and Al Karama of Syria meet in the second semi-final later on Wednesday.
Seongnam Ilhwa were the only South Korean side to reach the final of Asia's premier club competition when they were beaten by Saudi Arabia's Al Ittihad in 2004. Ittihad retained the title last year.
This year's final takes place over two legs on November 1 and 8.