JOHOR BAHRU, Malaysia — South Korea's K.J. Choi has claimed a four-stroke victory in the Iskandar Johor Open.

Choi closed with a bogey-free 8-under 64 on Sunday to finish at 20-under 196 in the Asian Tour event shortened to 54 holes by heavy rain.

Chapchai Nirat of Thailand took second after chipping in at three of the last four holes at Malaysia's Royal Johor Country Club, where the final round was suspended for two hours by a thunderstorm.

Retief Goosen of South Africa shot a 62 to finish at 15 under and take a share of third with overnight leader Himmat Rai of India, who closed with a 70.