Aaron Baddeley has imploded in the third round of the Texas Open, producing seven bogeys on his way to carding a four-over-par 76 on Saturday.
After starting the third round one shot off the lead, the Australian will go into the final round tied ninth at one-under-par and eight shots behind leader Jimmy Walker.
Fellow Australian Matt Jones had a great day, firing a four-under 68 round to be even par for the tournament and tied 12th.
Walker, who lives just a half-hour’s drive from TPC San Antonio, fired six birdies in a 69 to stretch his lead to four strokes over rising fellow American Jordan Spieth.
The 21-year-old Spieth, who also hails from Texas, carded a 71 and is two strokes in front of last season’s FedEx Cup playoff champion Billy Horschel, who birdied the last three holes in a 71.
Walker, who captured his fourth PGA Tour title at the Sony Open in Hawaii this year, started the day with a one-shot lead over Charley Hoffman and Baddeley.
Hoffman, who led after the first round before slipping to a share of second on Friday, fared even worse than Baddeley – signing for a 79 that left him 11 adrift on 218.
Scott Pinckney carded a 69 to vault into a share of fourth place on 214.
He was tied with former Masters champion Zach Johnson (72), Brendan Steele (72), Jason Kokrak (71) and Chesson Hadley (71).