Australia's Scott Hend is the leader of all the players in the clubhouse after thunderstorms again interrupted play at the Shenzen International golf tournament in China.
Some players will return on Monday to complete their rounds, but Hend has finished his 18 holes at 13 under.
But he is one shot behind the trio of England's Lee Slattery, Soomin Lee from South Korea and Frenchman Alexander Levy.
Slattery and Soomin both have five holes still to play, with Levy one behind.
Hend completed his fourth round six under.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Soomin held a two-shot lead overnight but lost ground on the front nine, with a bogey at the first and a double-bogey six on the seventh.
Slattery did not drop a shot in his 13 holes, birdying at six and nine.
This will be the first Monday finish in a regular European Tour event since the 2011 Singapore Open.
Slattery admitted he is running low on energy ahead of his final push for a third European Tour win.
"It's just been really tough out there to keep your concentration and keep your strength," he said.
"It's been a really difficult week. It is like two weeks in one this week, so I'll be glad to get it over.
"It's just been a really gruelling week, but I've hit the ball well all week."
