ERIN, Wis. -- Angel Yin started experimenting with a new putter about a month ago and decided to use it in a tournament for the first time at the most prestigious event in women's golf.

The move worked well in the first round at Erin Hills.

Yin made a 13 1/2-foot birdie putt on the par-5 18th for a 4-under 68 and a share of the U.S. Women's Open lead with 2020 champion A Lim Kim , Jinhee Im , Yealimi Noh , Rio Takeda and Julia Lopez Ramirez .

"I know U.S. Open is going to be extremely fast, so I wanted to find a putter that will hold the ground and just do what I want it to do," Yin said. "It just so happened to be this putter. I started tinkering with it like about a month ago, and I got lucky to use it."

The 26-year-old from California qualified for the U.S. Women's Open

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