India's Anirban Lahiri battled to even-par 70 to slip to tied 16th spot
Following on his first round score of five-under 65, Lahiri is now five-under for 36 holes but slipped from overnight tied seventh to tied 16th.
Meanwhile, young Shubhankar Sharma had a miserable second day at the event with a disappointing nine-over 79 that took him to 11-over 151. He was last at the 71st spot and had no birdies against nine bogeys on the second day.
Race to Dubai champion, Tommy Fleetwood had seven birdies in his 63 as he took a share of the lead alongside Ian Poulter (62-67) and Justin Thomas (65-64) at the halfway stage.
He hit seven of 14 fairways and 10 of 18 greens in regulation but missed a couple of short putts, one from five feet and two others from 10 and 14 feet.
Starting at the par-4 10th, Lahiri's 117-yard approach to seven feet set himself up for the birdie on the hole, but on the par-4 11th, his tee shot went 292 yards to the left side of the fairway.
His second shot then went 117 yards to the right greenside bunker, and he came out needing to hole a 20-footer for par and he failed for a bogey.
On the par-4 13th hole, Lahiri hit his approach shot to inside four feet for a birdie but missed his par putt from 6 feet on 17th for a 3-putt bogey from 26 feet.
Lahiri bogeyed sixth but holed a chip from 38 feet for a birdie that ensured a par round.
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