Phil Mickelson acknowledges the crowd after making his putt to win on the 18th hole during the conclusion of the final round of the AT&T Pebble Beach Pro-Am golf tournament at Pebble Beach Golf Links.
Just as he and Casey were about to tee off for the start of their round on Sunday, severe weather hit the Monterey Peninsula, covering Pebble Beach in hailstones.
That was start of a five-hole stretch when Mickelson made three birdies and Paul Casey had two bogeys, taking Lefty from two behind to three ahead.
Phil Mickelson was not happy at having to return on Tuesday to play the final two holes after bad light stopped play.
"So at the end of past year, even though I played poorly, I had something happen where it seemed like overnight - it had really been in the works - where my driver speed shot up 5, 6 miles an hour, which rarely ever happens to anybody, let alone somebody in their late 40s", he said. Casey could barely see the 3 feet of grass between his ball and the cup on the 16th hole and said there was no way to complete two holes in six minutes.
Expanding on why he felt his performance at Pebble Beach boded well for Augusta, the three-time Masters victor said: "The two areas that you have to be at your best to play well at Augusta are you've got to hit the ball long and have a really good short game and those were two areas that were very helpful here". The greens were beat up.
It was a decision Mickelson clearly disagreed with, visibly shaking his head when the horn blew to officially halt play.
I've received stick for years for backing Mickelson repeatedly in tournaments he likes but it's paid off yet again and I've already backed him for this week's Genesis Open too.
Casey at least birdied the 18th for a 71 to finish alone in second, the difference of $152,000.
Mickelson had not won on United States soil since the 2013 Phoenix Open. Mickelson marked his ball all week with a silver coin given to him by his grandfather, Al Santos, one of the original caddies at Pebble Beach in 1919. This morning we came out and the greens were much better.
The course will be completely different in June, with the rough taller and the greens firmer and no amateurs to take the edge off the proceedings.
This was a fantastic win for the 27-year-old, a protege of fellow Aberdonian and former Open champion Paul Lawrie.
"I thanked Paul this morning for letting us finish today", he said of the delayed finish. This could open the floodgates for Law, while David Drysdale's tie for fifth place made it a very good week for Scottish players in Victoria. I would love nothing more than to add to it five months from now, but that's so far down the road.
Scot Russell Knox closed at nine under after a fourth-round level-par 72, one shot clear of Northern Irishman Graeme McDowell.