Rose is looking for his US Tour victory

FOURTH ROUND LEADERBOARD
(US unless stated):
-20 J Rose (Eng), L Glover
-18 J Rollins
-16 J Quinney, C Hoffman,
-15 D Hart, J Durant, M Kuchar, H Slocum, R Allenby (Aus), D Waldorf, V Taylor

Britain's Justin Rose somehow lost a five-stroke advantage in the fourth round of the Bob Hope Chrysler Classic.

The 26-year-old heads into the final 18 holes tied with American Lucas Glover.

Rose went into Saturday's round at the Country Club course with a two-stroke lead and added three more early birdies to go clear of the field.

He carded three further birdies but also added four bogeys for a two-under 70, while Glover birdied five of his last eight holes for a 65 at La Quinta.

Rose was not too downbeat about his fortunes.

"Not a bad score, not a great score; kept my nose in and around the lead, so obviously that's a good thing going into tomorrow," he said.

"I really wanted to try to pull four, five, six ahead - the bigger the lead, the better.

"If I was to be brutally honest, I think that coming back in one-over on the back nine, I feel like I let two or three slip away for sure.

"But at the same time, I had been pretty mistake-free up until then - and four rounds, it's a lot to ask."

American John Rollins is two strokes behind after his fourth-round 67.

Phil Mickelson, the only player in the top 30 of the world rankings entered in the event, completed a six-under 66 on Saturday to lie 13-under in a tie for 19th.