This was Mickelson's fifth AT&T title so it's fair to say he was a tournament specialist before this week but he was still generally a [36.0] chance and he even hit a high of [50.0] before the off. Casey, who traded at a similar price to Lefty pre-event, hit a high of [80.0] and a low of [1.5] in-play.
Phil Mickelson has won the weather-affected AT&T Pebble Beach Pro Am and [1000.0] shot, David Law, has won the ISPS Handa Vic Open.
He seemed undaunted on Monday, though, hitting his approach to the par-three 17th close before finishing with a birdie at the par-five 18th to get to 19-under for the tournament. "And I have believed for some time that if I play at my best, it will be good enough to win tournaments". 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.
At least Phil Mickelson didn't break his own record for the longest event in PGA Tour history.
The final round Sunday had been delayed at the start by one hour because of rain, and then sunshine quickly gave way to hail that covered the greens in a sheet of white and led to a two-hour delay.
Mickelson was standing on the 17th tee when he heard the horn sound to stop play, and he shook his head. "I don't want to put Paul in a bad spot".More news: Steelers’ Antonio Brown tweets it’s ‘time to move on’
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Mickelson had not won on USA soil since the 2013 Phoenix Open. Casey said there was no way to finish and they had to return Monday morning.
Pebble Beach was so soft that balls were plugging in the fairway when they landed.
Asked in a greenside interview what the performance did for his confidence, Mickelson said: "Absolutely nothing, because it's nothing like the course we'll see".
That also led him to enter this week's Genesis Open, which he had not planned to play, prior to defending a title at the WGC-Mexico Championship next week.
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 morning we came out and the greens were much better.
"I get where Paul is coming from", Mickelson said. "This is a special place for me".
Scot Russell Knox closed at nine under after a fourth-round level-par 72, one shot clear of Northern Irishman Graeme McDowell. I have such great memories here and I would love nothing more than to add to it, five months from now.