Els had to shake off a bout of food poisoning to play

R3 LEADERBOARD:
GB & Ire unless stated
-8 E Els (SA), A Scott (Aus)
-5 B Kennedy (Aus)
Selected others:
Level L Westwood, A Cabrera (Arg)
+2 Y Ali, C Schwartzel (SA)
+10 M Campbell (NZ)

Adam Scott and Ernie Els set up an intriguing final round by opening up a three-shot lead over the field in the third round of the Singapore Open.

Defending champion Scott's six-under round of 66 and Els' 69 put them both on eight-under-par, with Brad Kennedy in third, one ahead of Liang Wenchong.

Last year's runner-up, Lee Westwood is the best-placed European on level par.

Play had to be suspended for two hours in the middle of the day because of the threat of lightning.

Scott has not won a tournament since his victory here last year, and began the day three adrift of Els.

But five birdies in a flawless round put him back in contention, and made him the only player to get through the round without dropping a shot.