Nelly Korda has become the first two-time winner on the LPGA Tour this season, closing with a five-under 67 on Sunday for a two-stroke victory in Michigan.
The Gainbridge LPGA winner in February, Korda finished at 25-under 263 to break the Meijer LPGA Classic record at Blythefield Country Club.
She shot a career-best 62 on Saturday to take a three-stroke lead into the final round.
"Actually, really enjoyed today," Korda said.
"Honestly, there has been times where on Sundays I really like haven't enjoyed it, like the stress kind of ate me and I didn't stay in the moment and enjoy playing golf on a Sunday in a final group.
"But today I really enjoyed it and it was actually a really good battle between Leona and I. She definitely kept me on my toes."
The 22-year-old American, ranked No.4 in the world, won her fifth tour title.
She rebounded after missing the cut two weeks ago in the US Women's Open.
"Today I really enjoyed it and it was actually a really good battle between Leona and I. She definitely kept me on my toes." – Nelly Korda
Leona Maguire of Ireland was second after a 66.
"I knew it was going to be a battle," Maguire said.
"I knew I had a lot of golf in front of me and she had a three-shot head start."
The major KPMG Women's PGA Championship is next week at Atlanta Athletic Club.
"This week is going to be huge heading into a major," Maguire said.
"I knew I was playing some great golf. It's a huge confidence boost for the rest of the season."
In Gee Chun shot a 63 to tied for third at 21 under with Brittany Altomare (64).
Anna Nordqvist followed at 20 under after a 66.
Su Oh was nine shots adrift of Korda with a 71 leaving her at 16 under and best of the Australians in a tie for 15th
Katherine Kirk closed with a 68 to be 13 under while Gabriela Ruffels (69) and Hannah Green (70) were 11 under for the week.