Mickelson, who started the final round three shots behind, never came close to a bogey and built a three-shot lead through 16 holes on Sunday night when it was too dark to finish, no matter how hard he lobbied to keep going. It's where his grandfather, Al Santos, was among the first caddies when the course opened in 1919, and Mickelson still uses as a marker the 1900 silver dollar his grandfather kept in his pocket to remind him he was not poor.
He matched the low score of the final round while playing in the last group, turning a three-shot deficit into a three-shot victory.
Woods is the only player to have broken through the $100 million barrier on the PGA Tour, the 14-time major victor totaling $115,584,657 across his illustrious career.
Casey birdied the 18th for a 71 to finish alone in second, and he won the pro-am portion of the tournament. Casey and FedEx executive Don Colleran had a one-shot lead in the pro-am.
Even so, it was the fourth time Casey took a 54-hole lead of at least two shots into the final round on the PGA Tour and failed to win.
Undoubtedly Mickelson will be the subject of considerable conjecture when the golf world returns to Pebble Beach in June for the 119th playing of the U.S. Open, the major that defines Lefty's bouts of futility more than anything.
Mickelson argued that he could "see just fine" on Sunday evening, moments after sunset with two holes remaining. "So I ended up thanking him this morning for making that tough call because I made it tougher for him and but he did the right thing in protecting both of us".
Weather delayed the start for multiple players on Sunday as play was suspended just before 2 p.m. EST.
"I just need one more match with Tiger and I should get there", Mickelson joked. Check in for highlights from every tournament plus player interviews, player profiles, tournament previews, swing analysis and all the greatest shots and awesome moments.
Mickelson won at Pebble Beach for the fifth time, matching the record set by Mark O'Meara. He won the British Open that summer in Scotland, and the Mexico Championship previous year. It is where he began his professional career at the 1992 U.S. Open. And while the fairway lines already have been brought in to be much narrower than usual, the rough was light. A missed cut in Phoenix, Mickelson said, was due in part to a driver experimentation that he quickly abandoned.
His first one also was a Monday finish, when players returned in August - more than six months later - to finish the third round of the weather-plagued tournament to make it official.