LOS ANGELES - Adam Scott got the trophy, a big check and an asterisk.

A strange, wet week at the Nissan Open finally ended Monday morning when Scott made a 4-foot par putt on the first hole of a sudden-death playoff to beat Chad Campbell in the first 36-hole event on the PGA Tour in nine years.

The third round, which was supposed to resume Monday, was called off when heavy rain pounded Riviera Country Club again and made the course unfit for play.

That led to a playoff between Scott and Campbell, who both finished at 9-under 133. Campbell finished his second round Friday, while Scott finished his second round Sunday.

"It's been an odd week," Scott said.

It gets even more weird in the record books.

Scott was posing with the trophy as a cold rain continued to fall. He earned $864,000, which will count on the PGA Tour money list and is the same if he had won after 72 holes.

But because it was only a 36-hole event, the Nissan Open will not be recorded as an official victory. Scott does not get any of the perks that come from winning on the PGA Tour (he doesn't need most of them), including a ticket to the winners-only Mercedes Championships at Kapalua.

And that's OK with Scott.

"I never really played under any pressure this week, apart from that one playoff hole," Scott said. "That's not coming down the stretch, testing every element of your game."

The last 36-hole winner on the PGA Tour was Michael Bradley in the 1996 Buick Challenge at Callaway Gardens, a tournament that no longer exists. He won in a five-way playoff.

Other players to have won after only two rounds on the PGA Tour were Brian Henninger at the 1994 Southern Farm Bureau Classic, and Neal Lancaster at the 1994 Byron Nelson Championship, a victory that was known as the half-Nelson.

Those counted in the record books, but the PGA Tour later changed its policy.

It wasn't hit-and-giggle, either.

While the other players cleaned out their lockers and left Riviera, most of them getting an early start down the San Diego Freeway to La Costa, Scott and Campbell headed for the practice range, their caddies standing next to them holding the umbrellas.

Campbell blistered his drive down the middle of the fairway, while Scott hooked his drive into the rough on the side of the hill. That's where it all turned.

Scott hammered a 3-wood just short of the green, while Campbell flared a 5-wood to the right, the ball landing in a muddy puddle. Once he got relief, he chipped about 5 feet past the hole. Scott pitched beautifully some 80 feet up the hill to about 4 feet.

It was the last thing Campbell needed.

He shot his 65 on Friday to reach 9 under par, then got the weekend off. Campbell didn't hit a single shot for two days, the first putt he faced was a sliding 5-footer for par that was slightly downhill.

"I just hit it too firm," Campbell said.

The ball caught the left lip and spun by, and Scott ended whatever drama was left by making his par putt.

"You never want to get beat in a playoff," he said. "That's never a good feeling."

It was a strange feeling for Scott. After making the putt to win, it was almost as if he forgot what he was supposed to do. First came an awkward smile, then a gentle raising of his hand to acknowledge the 200 or so fans gathered under gray skies and a colorful array of umbrellas.

"It doesn't feel like we played much golf this week," Scott said. "I don't feel tired and drained like you normally do when it's finally over, and you've been battling with some guy for the last 36 holes."

A dozen other players never got the chance to keep playing.

Darren Clarke and Brian Davis were one shot behind going into the third round, which was supposed to resume at 7:30 a.m. PST. They cleaned out their lockers and left town.

Colin Montgomerie, who has never won on the PGA Tour, was two shots behind and had to settle for a tie for fifth.

The rain also ended any chance for Tiger Woods to return to No. 1 in the world this week. He needed to finish fourth to replace Vijay Singh, and wound up four shots out of the lead in a tie for 13th. Woods likely will have to win the Match Play Championship this week for the third straight year to reclaim No. 1.

Scott moved up to No. 7 in the world. He was awarded 75 percent of the world ranking points at Riviera.

"I can take some confidence out of this week," he said. "I think if I won over 72 holes, I would be taking a lot more."