Lydia Ko has tumbled down the leaderboard at the US Open after struggling with consistency in her second round in San Francisco.
Ko began the day on even par, in a tie for 16th place and four shots off the lead. However, she immediately ran into trouble on the same back-nine holes she struggled with during her opening round.
Beginning her round on the 18th hole of the Lake Course at the Olympic Club, Ko immediately bogeyed to set in motion a wild start to her day.
Ko seemed to settle into her game with two pars and a birdie before posting a double bogey on the 14th hole - matching her score there on Friday - and ending her first nine holes with bogey-birdie combo.
It was a similar story in the back half of her round with a birdie and six pars balanced by a double-bogey and a bogey to leave her score at an underwhelming four-over.