World No 1 amateur Lydia Ko fell off the pace in the third round of the US Open Championship in New York today.
The 16-year-old from the Gulf Harbour Country Club, who had rounds of 72 and 76 at the Sebonack Golf Club to make the cut in her fifth major, slipped back in the third round with a seven-over-par 79.
The world No 16 is on an 11-over-par three-round total to be in a share of 51st place heading into the final round.
Ko will begin the final round 21 shots back from World No.1 Inbee Park who is on track to win three major championships in a row.
The New Zealand Women's Open Champion was again slow to start with three bogeys on the outward nine to make the turn in three-over-par 40.