Los Angeles - World number one Justin Rose shook off two double bogeys to card a three-under par 69 on Saturday and maintain a three-shot lead in the US PGA Farmers Insurance Open.
Six birdies and an eagle on the South Course at Torrey Pines saw England's Rose maintain his grip on the tournament with an 18-under par total of 198.
That put him three strokes clear of Australian Adam Scott, who had seven birdies and an eagle in his five-under par 65 for a 15-under total of 201.
First-round leader Jon Rahm of Spain was alone in third on 202 after a four-under 68. American Doug Ghim followed on 203 and Talor Gooch on 204, with Rory McIlroy and Hideki Matsuyama heading a group of five players on 205 - McIlroy after a 69 and Matsuyama, who started the day in second place, with a one-over par 73.
Rose led by as many as six strokes, but his second double bogey of the day, at the par-four 14th, trimmed the lead and he closed with a bogey at the par-five 18th, where his second shot from the left rough found the water.
Even with the mis-steps, Rose tied the 54-hole tournament record at 18-under.
Tiger Woods, whose eight wins at Torrey Pines included the most recent of his 14 major titles at the 2008 US Open, failed to gain any ground, firing a one-under 71 that left him 13 off the pace.
Woods said he drove it well, but needed to improve his iron play and get some putts to drop to make his goal of reaching double-digits under par on Sunday, which would give him "something positive" to take into the rest of 2019.
Leading third-round scores on Saturday in the US PGA Tour Farmers Insurance Open in San Diego, California (par-72; USA unless stated):
198 - Justin Rose (ENG) 63-66-69
201 - Adam Scott (AUS) 70-66-65
202 - Jon Rahm (ESP) 62-72-68
203 - Doug Ghim 63-73-67
204 - Talor Gooch 69-68-67
205 - Hank Lebioda 70-67-68, Rory McIlroy (NIR) 71-65-69, Billy Horschel 66-68-71, Joel Dahmen 68-67-70, Hideki Matsuyama (JPN) 66-66-73
206 - Scott Brown 70-68-68, Michael Thompson 68-69-69, Adam Svensson (CAN) 70-67-69, Wyndham Clark 69-67-70, Bae Sang-moon (KOR) 68-67-71
207 - Jason Day (AUS) 67-71-69, Tony Finau 69-69-69, Patrick Reed 69-69-69, John Huh 68-68-71, Kang Sung (KOR) 71-70-66, Sepp Straka (SUI) 69-67-71
208 - Martin Laird (SCO) 73-66-69, Keegan Bradley 68-71-69, Kim Si-woo (KOR) 67-68-73