Hung Chien-yao shot a 66 to take the clubhouse lead by one shot at five-under before severe weather and darkness halted the first round of the Singapore Open. Miguel Tabuena of the Philippines and Japanese Tour stars Yuta Ikeda and Yoshinori Fujimoto are one shot back in a three-way tie for second at six-under. Defending champion Sergio Garcia finished his round and is three shots back at two-under after a 69. Matthew Fitzpatrick was at three-under after a 68 while Garcia's Ryder Cup teammate Paul Casey stood even through five holes when play was stopped.