Australia's Minjee Lee has the chance to celebrate her 22nd birthday on Sunday with a fifth LPGA Tour title after claiming the lead in the Volvik Championship.
Lee shot a four-under 68 to get to 12 under on Saturday and she will enter the final round with a two-stroke advantage from Stacey Lewis, In-Kyung Kim, Jodi Ewart Shadoff and Lindy Duncan.
World No.15 Lee has good previous form in this Ann Arbor, Michigan tournament, having finished tied second by one shot to Shanshan Feng last year.
She's seeking her first LPGA win since 2016 when she won twice.
"It was pretty solid today," Lee said. "I didn't make any bogeys. Just four birdies on the card. Yeah, that's pretty good.
Lee left a putt about eight feet short on the par-3 16th, but she was able to par that hole.
Then she hit a provisional after a wayward tee shot on 17, but her original ball was OK in the rough, and she parred that hole too.
"I think just keeping it in play was pretty important today," she said.
Lewis, who is expecting her first child in November, birdied five of the last six holes for a 67. Kim (67) birdied six of the first eight holes and shot a 31 on the front nine.
With Ewart Shadoff (69) and Duncan (69) also at 10 under, and five more players at nine under, the stage is set for what could be a wild final round.
"This golf course, you can shoot a number, you can shoot 6 or 7 under, but you can also play pretty good and shoot even par," Lewis said.
"So you've just got to get runs like I did there at the end of the day and just keep hanging around and post a number and see what happens. That's what wins these things."