The final round of the Pebble Beach Pro-Am in California was abandoned because of bad weather and safety concerns, with 54-hole leader Wyndham Clark declared the winner.
The round had already been moved to Monday due to strong winds and rain.
Conditions were forecast to improve but officials decided to abandon the event out of an "abundance of caution" after talks with emergency authorities.
US Open champion Clark held a one-shot lead after three rounds on 17 under.
"It's pretty surreal right now. It's maybe not the way you dream of winning," Clark, 30, said.
"With that said, a lot of us yesterday had - not that we knew - but we definitely had this outside shot and [were] thinking that maybe this is our last round."