Ireland's Leona Maguire slid down the leaderboard after a third round of three-over-par 75, as overnight leader Miyu Yamushita's advantage was cut down to one shot heading into the final day's play at the AIG Women's Open at Royal Portcawl.
Maguire had to make do with just one birdie on a frustrating day on the links in the toughest conditions of the week so far.
The Cavan golfer started with a bogey on one but bounced back with a birdie at the par four second hole. However that would be as good as it got for Maguire.
Bogeys on seven and ten were compounded with another bogey on the tricky 17th hole to see Maguire sign for a 75.
Miyu Yamushita also had to contend for an over-par round, shooting a round of 74, but will be relieved to remain one shot clear heading into the final round.
The Japanese golfer was chased down by Korea's A-Lim Kim (eight-under-par) and America's Andrea Lee (seven-under-par) who both shot rounds of 65s to get within reach.
England's Charlie Hull is a shot further back on six-under-par.