His 15-under 127 total tied the lowest 36-hole score on the European Tour this season.
I am happy with the way that I have played, Singh said. I was bogey-free, and holed a great long putt on the last for eagle.
Simon Wakefield of England (65) trailed Singh, and Mark Brown of New Zealand (63) and Peter Fowler of Australia (67) were five shots behind the leader.
The tournament was reduced to 54 holes after rain canceled play Thursday.