May 20 (Reuters) - Jason Day made the most of a frantic moving day at the AT&T Byron Nelson on Saturday by firing a seven-under 63 in the third round to move within two shots of leader James Hahn at TPC Las Colinas in Texas.
World number four Day began the day nine shots off the pace but made a run of five birdies in a row from the seventh and the Australian crowned a brilliant round with a 60-foot birdie putt at the par-three 17th to reach 10-under 200 for the tournament.
Hahn made three birdies on each side in a bogey-free 64 to grab the 54-hole lead at 12 under par in his quest for a third PGA Tour victory.
Billy Horschel, the 2014 FedExCup champion, was alone in second place one shot back at 11-under after birdies at the last three, including a holeout from the greenside bunker at 17 for his 66.
Second-round leader Jason Kokrak, who led by five strokes after firing a 62 on Friday, moved in the wrong direction shooting a two-over 72 marked by a triple-bogey six at the par-three fifth hole.
Kokrak stood tied for third with Day on 10 under par at the Four Seasons Resort in Irving, Texas.
Reporting by Larry Fine in New York,; Editing by Pritha Sarkar