Leona Maguire had a rough day at the office, giving up an early eagle advantage with five late bogeys to drop out of contention at the ANA Inspiration.
The Slieve Russell golfer moved right back into the mix at the year's first major following that eagle on the second hole, and remained on six under par at the turn.
But then disaster struck for the former amateur world number one as Maguire made three bogeys in a row from the tenth to 12th holes.
And while the Cavan native gained a shot back on the 13th to halt the bogey streak, further back-to-back dropped shots on 15 and 16 saw Maguire plummet down the leaderboard to two under and a share of 33rd place, 12 shots off leader Patty Tavatanakit.
Stephanie Meadow moved back inside the top 40 with another under par round, as the Jordanstown native made four birdies and three bogeys en route to a 71.
The LPGA tournament is Tavatanakit's to lose after she extended her lead to five shots on Saturday.
The 21-year-old was only one shot clear headed into the third round, but wasted little time in giving herself some space as she birdied her first three holes at the Mission Hills Country Club in Rancho Mirage, California.
She picked up four more shots throughout the day, with two late bogeys bringing her final score to a five-under 67.
America's Ally Ewing and South Korea's Mirim Lee are both second on nine under after carding scores of 66 and 68 respectively.
Meanwhile England's Charley Hull was left to rue a costly triple bogey on the third as she fell to equal-fifth with a one-under 71.