The professional soccer match overtook Gangwon in the K-League promotion play-off and moved one step closer to promotion to the first division.
Both teams fought back and forth throughout the first half, but the game turned to a home team match in the 5th minute of the second half.
Daejeon's foreign ace Masa exquisitely dug into the left side of the penalty box and handed the ball to the center, and Lee Hyun-sik calmly connected it with a right-footed shot to break the net.
Daejeon, who won the match 1-0 by safely keeping the first goal like a gold medal, took an advantage in the single-tree bridge match.
Daejeon will be able to advance to the first division for the first time in six years since relegation in 2015 even if they only draw a draw in the second away match to be held on the 12th.