• Bob Hope Classic, 4th round

Watson and Prugh locked together

Bubba Watson is chasing his first win on tour at the Bob Hope Classic © Getty Images

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Bubba Watson dropped two shots on the final hole to hand Alex Prugh a share of the lead after four rounds of the Bob Hope Classic.

Watson, chasing his first tour success, would have held a two-shot cushion heading into Monday's final round were it not for a costly double bogey at the 18th. "I was just trying to hit it down the middle, but played a dumb shot," Watson said. "I tried to cut a ball instead of just playing a draw with a different club, and left it out there. And I knew it wasn't cutting as soon as I hit it because I was trying to baby it. It hit up there high and then bounced all the way down into the water."

The pro-celebrity tournament will run over to Monday after a rain-affected week and Watson, who led after 36 holes, will be in the final pairing with Prugh who started Sunday's fourth round with a one-stroke advantage but found life tough on the Silver Rock course. The PGA Tour rookie's cause was not aided by a bogey on the first hole and although he birdies the second, third and fifth, a further bogey at the ninth opened the door for his rivals. He held things together on the back nine and is level with Watson on 23-under-par.

Bill Haas and Tim Clarke sit just a shot adrift of the leading duo, while Kevin Streetman catapulted himself into contention on 20-under-par with a nine-birdie 64.

A double-bogey six on the 17th could prove costly for Joe Ogilvie. The American hit six birdies and was on course to secure a place in the final pairing, but his round fell apart on the 17th at La Quinta and he will start the final day two shots off the lead.

Australian veteran Steve Elkington posted his fourth sub-70 round of the week, a 68, to sit five shots behind the leaders at 18-under-par.

The tournament takes place on four different courses, La Quinta, Palmer Invitational, Nicklaus Invitational and Silver Rock, over five days but they have all come alike to Mike Weir who posted his fourth consecutive 67 to sit at 20-under-par.

A bogey-free round of 68 left Richard Johnson on 17-under-par and the highest-placed European, but Justin Rose had a day to forget as a 74 saw him miss the cut. His round fell apart at the turn, as a triple-bogey seven at the 10th checked his momentum. Three birdies on the back nine lifted the spirits but they were not enough to secure Rose's place in the field for the final day. Brian Davis and Greg Owen scraped into the final day nine-under-par.

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