And Ulsan hit a semi-final date with his compatriot Pohang Steelers in South Korea next Wednesday.
Ulsan took the lead through Valery Kaizashvili in the 13th minute, and Han Kyu-won equalized the score in the 39th minute.
Then Ulsan scored the second goal through Yun Il-lok in the 46th minute of the first half, but Jeonbuk equalized the score again with Takahiro Kunimotos goal in the 48th minute.
In the first overtime period, Lee Dong-jeong scored the third goal for Ulsan to continue his defense campaign for the title with success.
Pohang Steelers beat Japan’s Nagoya Grampus on Sunday morning, 3-0.
The winner of the Ulsan-Pohang match will play the final in Saudi Arabia against one of the two local clubs, Al Hilal or Al Nasr.
Al-Hilal will play Al-Nassr in their two countries in the semi-final match next Tuesday.
And it was decided that Saudi Arabia would host the final after the Asian Football Confederation decided to hold the match at the stadium of the team belonging to the western region of the continent in odd years.
While in even-numbered years, the final will take place at the team’s stadium belonging to the eastern region.
Al Hilal Saudi Arabia is the team that won the title with 3 championships, equal with Pohang Steelers.
While Ulsan won the title in 2012 and 2020, the victory was never crowned.