Koepka takes Byron Nelson golf lead
Jordan Spieth watches as Brooks Koepka drives off the tee. (AAP)
American Brooks Koepka made three birdies on the back nine to charge past hometown favourite Jordan Spieth and into a two-shot lead after the third round of the Byron Nelson Classic in Texas.
Koepka posted a five-under-par 65 for a 16 under total at the TPC Four Seasons Resort in Irving, while Spieth closed with bogeys at 14 and 18 for a 14-under 67 to drop back into second place.
US Open champion Spieth held the outright lead but an errant tee shot at the par-four 14th found water, resulting in his first bogey of the day and a two-shot swing there as Koepka drained a 20-foot birdie putt.
Americans Matt Kuchar (65) and Bud Cauley (68), and Spaniard Sergo Garcia (68), were tied for third at 13 under while overnight leader Ben Crane struggled to a 72 to fall six strokes off the pace.
John Senden is the best-placed Australian in a tie for 39th at six under and is one shot clear of compatriot Stuart Appleby (T46).
