SEOUL, 23 Oct, 2014 (AFP) - A late start caused by a fogged-in course at the Woo Jeong Hills Country Club in Cheonan meant a number of players were unable to get around their 18 holes before the evening darkness set in.
Jeon, who managed to complete a full round, carded a four-under 67 to lead one stroke ahead of compatriot Choi Ho-Sung who only shot 12 holes.
American Kevin Na, the highest ranked player in the field, was mid-way down the board at three-over having completed 15 holes.
Leading scores (after incomplete 1st round)
-4 Jeon Yun-Cheol (KOR) 18 holes completed
-3 Choi Ho-Sung (KOR) 12
-2 Kim Young-Woong (KOR) 15, Jamie Arnold (AUS) 13, Kim Bong-Sub (KOR) 11
-1 Jun Seok Lee (AUS) 18, Suk Jong-Yul (KOR) 18, Ham Jeong-Woo (KOR) 18, Kang Ji-Man (KOR) 13