English duo Mel Reid and Georgia Hall failed to keep pace with the leaders in round two of the ANA Inspiration, the second women's major of the year.
Reid finished round two on five under par, one shot ahead of Hall. Nelly Korda of the USA leads the field on 11 under par following a second-round 67.
Northern Ireland's Stephanie Meadow is still in contention on three under but England's Charlotte Thomas and Bronte Law failed to make the cut.
Korda holed long putts on the second and third holes on her way to a faultless day two, which included five birdies and no dropped shots.
"I did not know what I was doing on those two holes," Korda said. "My caddie Jason just said, 'okay, take a deep breath right now', so I was happy those two went in.
"Golf is just all about momentum, so you roll one in here and there and it just makes it a lot easier."