Lee Westwood made 11 birdies to shoot a 61 on Saturday and grab a share of the lead with struggling Louis Oosthuizen after the third round of the HSBC Champions.
Oosthuizen, the 2010 British Open champion, came into the weekend with a five-stroke lead over the field, but struggled with his putting and carded a 70.
The South African had a chance to retake the lead with a 15-foot birdie putt on the 18th hole, but missed by inches-the last of many near misses throughout the day.
Westwood and Oosthuizen are level at 18-under going into Sunday, three shots ahead of Phil Mickelson, who made seven birdies en route to a 66.
Ernie Els briefly surged into a share of the lead on the back nine before dumping his ball into a reservoir on the tricky 15th hole and taking a double bogey. He shot a 69 to drop to fourth place, level with Bill Haas (66) and Ian Poulter (65).
It was the second time in three weeks Westwood shot a 61-he also had one to beat Charl Schwartzel in the semifinals of the ...