McDowell caught at the last
Graeme McDowell finished with a double-bogey six to lose the outright lead at the Ballantine's Championship in South Korea.
The Northern Irishman signed for an excellent third-round 66 at Pinx Golf Club on Jeju Island but it could have been better had he not overshot the 18th green.
That allowed playing partner Jeev Milkha Singh to draw level on 18 under par following an eight-under-par round of 64, which included a run of eight birdies in 10 holes. McDowell shot six birdies in his round.
Ireland's Paul McGinley carded a second straight 67 and was four shots behind on 14 under, while Sweden's Johan Edfors birdied the last to complete a 69 and move to 13 under.
Open champion Padraig Harrington followed up a third-round 65 with a four-under 68 and was level with Australia's Kane Webber on 12 under.
Englishman Oliver Wilson was five under for the day to move to five under for the championship while home favourite KJ Choi shot a 69 to move to seven under.
