Glover, who won the U.S. Open in 2009 for his only major victory and just the third of his PGA Tour career, racked up 10 birdies to solidify his fifth top-10 finish of the season.
Five-time tour victor DeChambeau had eagled the same hole minutes earlier with a six-foot putt to temporarily take the lead by one stroke.
In the third round, Wolff knocked in 10 birdies and finished tied for the lead at 15-under-par with Bryan DeChambeau. "It doesn't get better than this".
"I hit a really good putt". This week I just believed in myself. And not a lot of putts were dropping today. "If I can stay like that tomorrow it should be pretty exciting". And as soon as it dropped, the tears started coming.
It forced Morikawa to make his putt to force a playoff but his effort missed narrowly to the low side of the hole. Ortiz, a native of Mexico still seeking his first tournament victory as a pro, had missed the cut in seven of his previous 10 events. "Let's show these people what you can do. That means I don't have to Monday qualify or it would have been a long drive", he said.
But it's not just the 20-year-old's performances that catch the eye - his swing does too. "So, it was great playing by Bryson". Check in for highlights from every tournament plus player interviews, player profiles, tournament previews, swing analysis and all the greatest shots and wonderful moments. To be able to have a chance against him is awesome.More news: U.S. Oil Prices Begin Recovery From Previous Tough Week
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"My mindset was kind of the same even after that shot", Wolff said. "I knew I can (win)".
"I've changed forever, I guess", he added.
Wolff left Oklahoma State after his sophomore year and turned pro in June. "And it's something that we talked about since the beginning of the week just being myself and I didn't really say much because I was crying".
Wolff would be the second-youngest US PGA Tour victor in 80 years, eclipsed only by Jordan Spieth, who won the 2013 John Deere Classic at age 19. It was Ishikawa's first victory on the Japan Golf Tour in almost three years.
None of the three leaders can afford to relax with American Wyndham Clark, who shot a seven-under 64 on Saturday, and Canadian Adam Hadwin both one stroke behind.
Robert Rock, who had led by one going into Sunday's round finished in joint third after a disappointing level par 70.