Matthew Wolff shoots 64 to take Rocket Mortgage Classic lead

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Matthew Wolff watches his drives on the second tee during the third round of the Rocket Mortgage Classic golf tournament, Saturday, July 4, 2020, at the Detroit Golf Club in Detroit. (AP Photo/Carlos Osorio)

DETROIT – Matthew Wolff has been working on his mindset, trying to have a good time regardless of results to help him perform closer to his potential.

An ice cream truck outside the Detroit Golf Club seemed to help.

Wolff had a roller-coaster round that went well enough Saturday to give him a three-shot lead in the Rocket Mortgage Classic. He shot his second straight 8-under 64 to move into position for his second PGA Tour victory.

“I have to give credit to the ice cream truck that was circling the property," said Wolff, who was 19-under 197 after three rounds. “I’m not joking, actually."

Wolff made a 35-foot putt on the 138-yard No. 5 for birdie, his second of nine birdies.

“I heard the ice cream truck and I’m like, `I have a good feeling about this,'" Wolff recalled. “Just had that little like ice cream truck song in my head. I think that helped me just not think about the speed or the line or anything, just keep my head free."

Armour and Bryson DeChambeau were tied for second after 67s.

DeChambeau had a testy exchange with a TV cameraman after a bogey on the sixth hole.