CBS will provide live coverage of the event via its website, with coverage starting at 11 a.m. ET and continuing until play is finished.
Mickelson's first Pebble Beach title back in 1998 came when the weather was so bad that the final round was actually played on a Monday in August - six months after the tournament began.
Scott Stallings (66) was in the clubhouse on 15-under 272, tied for second with Mickelson's playing partner and overnight leader Paul Casey. Casey's only hope was for Mickelson to make a mistake, and there was little chance of that.
The PGA Tour is making another stop at Pebble Beach this season for the U.S. Open, and that is the only major championship Mickelson hasn't won.
"But I have pretty good vision, I can see fine and I'm playing well so I wanted to continue, that's all there is to it".
This was his fifth win at Pebble Beach, a lovely golf course that he clearly knows very well and is also staging the US Open this year.
"It has been a special week for me", Mickelson said.
On Monday morning, he had a change of heart and said he thanked Casey for standing his ground.
"For the week, I've only made eight [actually seven] birdies, and that's not going to get it done", Woods said.
"I just really enjoy this place".
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". During Saturday's round Day found 10 of 14 fairways and 14 of 18 greens in regulation but missed several short birdie putts to post an even-par 72 and a nine under total.
Hale Irwin, who won the 1990 edition of the US Open at 45 years and 15 days old, is the oldest US Open victor to date so the stats are really against Phil Mickelson, who turns 49 on the Sunday of this year's edition.
"A phenomenal round of golf, " Casey said.
The American, who started the final round at Pebble Beach three shots back, ended with a three-shot lead with two holes left to play.
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. The US Open remains the final piece of the career Grand Slam for Mickelson, who already holds the record with six runner-up finishes.
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