"It's a great day, acknowledged it, and it's in the past now," Patty said. "All I can think about is what can I do tomorrow, what can I improve from today's round?
"I felt some pressure today, especially on the back nine," Park said. "I don't know why. I had quite a bit of cushion. I made a couple of mistakes. The eagle on 16 was a great eagle for me."
"I was just going through that a little bit of a rough time, was going down a little bit," Park said. "Then No. 13 birdie was a big turnaround and I was able to finish well after that."
8 Both US events will have a field of 144 players with Canada's Brooke Henderson seeking a third consecutive Lotte win after last year's cancelation. South Korean Lee Min-jee is set to try and repeat in LA after her 2019 win and a 2020 wipeout.
"Golf has always had this excitement factor and innovation factor and a chance to get to believe that your 14 handicap can be 12 this year and finding the right mix to do that," Whan said.