PEBBLE BEACH, Calif. — Pebble Beach has seen its share of nasty weather over the years, whether it was snow on the 18th green or so much rain that the tournament was canceled. One year, it started in February and ended in August.

Another chapter was added to its meteorological legacy Sunday in the AT&T Pebble Beach National Pro-Am.

The wind was so violent that it toppled a 40-foot Monterey pine across the third fairway. A corporate tent was the next victim, and a small tower behind the 17th green, used to measure shots with a laser, also was knocked over.

And then it rained.

Dustin Johnson never made it to the driving range, giving him another night to sleep on his four-shot lead. And with more rain in the forecast Monday, there's a chance that his 7-foot birdie putt at Poppy Hills on Saturday will be his final shot of the tournament.

"I'm looking forward to playing tomorrow, and I hope we get to," Johnson said.

If the weather allows, it will be the first 54-hole event on the PGA Tour since Phil Mickelson won the BellSouth Classic in 2005 on a Monday before the Masters.

It could be the first Monday finish at Pebble Beach since 2000, when Tiger Woods rallied to win from a five-shot deficit, making up seven shots over his final seven holes. The year before, the Sunday round was washed out by rain and the late Payne Stewart was declared the winner when the Monday forecast showed storms that stretched from California to Japan.

Stewart had a one-shot lead that year. Johnson is four shots clear of Mike Weir, the former Masters champion from Canada, who would be playing in the final group at Pebble for the second time in four years.