Korda finished 19 under, three strokes ahead of Lizette Salas, after a 4-under 68 in her final round.
Saso won the title with a 10-foot putt on the ninth hole to become the first player from the Philippines to win a golf major.
At 50 years, Mickelson wiped out the mark of oldest winner of a major that was set by Julius Boros, then 48, in the 1968 PGA Championship. Mickelson will turn 51 on June 16.
Japanese professional golfer Hideki Matsuyama is firmly in the lead with a four-stroke lead after 54 holes on 11-under 205.
PGA of America president Jim Richerson says President Donald Trump's incitement of violence and encouragement of invading the US Capitol last week was more than reason enough to move the event.
Scotland's leader Nicola Sturgeon says US President Donald Trump will not be allowed to visit Scotland to play golf during Joe Biden's inauguration, arguing Trump is subject to coronavirus travel curbs.
The coronavirus pandemic forced the tour to cancel dozens of its events including the Evian Championship this year.
Kim birdied her final three holes and tied the record for the largest comeback in a US Women's Open.
The 23-year-old American, who began the day two shots back of overnight leader Dustin Johnson, shot a bogey-free six-under-par 64 to reach 13 under for the tournament.
Woods had last played in February at Riviera and the back issues come with the year's first major in a Covid-19 shuffled schedule coming on August 6-9 at the PGA Championship at Harding Park in San Francisco.
Tiger Woods and Peyton Manning held off a late challenge to beat Phil Mickelson and Tom Brady 1Up in a charity golf match in Florida on Sunday that raised $20 million for Covid-19 relief efforts.
The coronavirus relief golf match featuring Tiger Woods, Phil Mickelson, and Super Bowl-winning quarterbacks Tom Brady and Peyton Manning will be held on May 24 at Medalist Golf Club in Hobe Sound, Florida.
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