Miguel Jimenez bogeyed his last hole but still led the Thailand Classic by one shot after the second round at Black Mountain on Friday.
Fighting the flu, the 51-year-old Jimenez shot a 6-under-par 66 to lie at 11 under overall, edging his playing partner and local Kiradech Aphibarnrat, who eagled the par-5 second hole in successive days en route to a second 67.
Scott Hend of Australia surged into the lead of the Thailand Classic on Saturday by shooting a 6-under 66 in the third round despite a bogey on the last hole.
Hend used his powerful hitting to make five birdies and an eagle on the 13th before his only mishap on the 18th. His 15-under total of 201 put him one shot ahead of overnight leader Miguel Angel Jimenez and local favorite Thongchai Jaidee at the European Tour event.