Korea's Choi Gwang-soo and Park Nam-sin opened up a four stroke lead over Thailand at the halfway stage of the Johnnie Walker Asian Nations Cup at Pinx Golf Club, Cheju Island, Korea.
Playing foursomes the Koreans fired a three-under-par 69 to lead on 12-under-par 132.
Thailand's Thammanoon Sriroj and Chawalit Plaphol returned a 71 to lie two ahead of Hong Kong's Wilson Choy and Danny Kan, who came in with a 73.
Taiwan's Lu Wen-teh and Chung Chun-hsing are fourth, two strokes further back, following a 74 with Malaysia's Danny Chia and Rashid Ismail in fifth place in the tournament that will see the top three teams qualify for the World Golf Championship - EMC World Cup in Argentina in December.
1 KOREA CHOI Gwang-soo PARK Nam-sin 63 69 132 -12
2 THAILAND Chawalit PLAPHOL Thammanoon SRIROJ 65 71 136 -8
3 HONG KONG Danny KAN Wilson CHOY 65 73 138 -6
4 TAIWAN CHUNG Chun-hsing LU Wen-teh 66 74 140 -4
5 MALAYSIA Danny CHIA Rashid ISMAIL 66 76 142 -2
6 INDIA Mukesh KUMAR Firoz ALI 70 73 143 -1
6 MARIANAS Mike CASTRO Lon LINDSEY 68 75 143 -1
6 SINGAPORE LAM Chih Bing POH Eng Wah 66 77 143 -1
9 PHILIPPINES Tony LASCUNA Robert PACTOLERIN 69 79 148 4
10 NEPAL Deepak ACHARYA Toran SHAHI 73 80 153 9
