Justin Rose knows he still has work to do at the Farmers Insurance Open, despite heading into Sunday's final round with a commanding lead and a chance at the all-time best score at the tournament.

Rose is six shots clear of the field at Torrey Pines in San Diego, having posted a four-under round of 68 on Saturday.

That brought him to 21 under for the event through three rounds, with Joel Dahmen his nearest rival at 15 under, and Ryo Hisatsune and Si-Woo Kim both 13 under. 

Should Rose finish two under or better on Sunday, he would surpass Tiger Woods in 1999 and George Burns in 1987 (both 22 under) for the best score in the event's history.

Rose could also achieve the largest margin of victory at the Farmers Insurance Open, which is currently the eight-stroke success posted by Woods in 2008.

The last time Justin Rose was 21-under-par at Torrey Pines ... pic.twitter.com/FD2ubVjQrK

— PGA TOUR (@PGATOUR) January 31, 2026

However, the 45-year-old, who won the event in 2019, will not get carried away ahead of the final round, telling Sky Sports: "I've enjoyed playing the golf course this week. 

"I want to continue to enjoy the week as a whole. It's another great round in good weather on an awesome golf course.

"There's never going to be any complacency.

"I think there's always enough respect for the game of golf in the back of your mind that you've got to do everything right tomorrow.

"You're going to come out, have to be focused, have to play well."