In the quarter final of 15th GS Caltex Cup, Kim Jisuk 7P defeated Choi Chulhan 9P and advanced to the semi finals. Before this game, Kim Jisuk's record against Choi Chulhan was not good, 2 wins and 8 losses, but Kim Jisuk got the last ticket for the semi finals.

The first semi final match on Sep 15, 10:00 a.m. (Korea Standard Time) is between Park Younghoon 9P and Lee Younggoo 8P, and it will be live broadcast on WBaduk.

The 15th GS Caltex Cup gives 2 hours and 40 seconds of overtime counting for 3 times. The first prize is 50 million Won (approx. $40,900), and second prize is 12 million won (approx. $9,800)