BEDMINSTER, N.J. — Momentum can work both ways, as Kelly Shon can attest. Two weeks after she got on a record-tying roll for a 63 in a women’s golf major, she saw one poor shot snowball into a 7-over-par 79 in the first round of the U.S. Women’s Open on Thursday.

The Port Washington resident, looking to build on a solid finish in the KPMG Women’s PGA, was in decent shape on the par-5 15th hole (her sixth of the day) at Trump National Golf Club. She was 1 over and had hit a big drive and pretty good 3-wood, leaving a pitch for the rest of the 518 yards.

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“It was an awful little pitch, and that green just funnels back left and that’s where the ball went,” she said, regretful of turning a potential birdie into a bogey. In the U.S. Open, she said, “That’s really all it takes.”

Things spiraled from there, with a triple-bogey 6 on the island green par-3 16th. The day became a disappointment for her and for her followers from Long Island and her alma mater, Princeton. It was the sort of round that makes a golfer just want to put the clubs away for a while, but she planned to get right back to work after a lunch break.

“I definitely want to practice a little bit. I have a lot of time between now and my second round. Even then, with what the weather looks like, I don’t know when I’ll be playing next,” said the golfer who had been at risk of missing the cut at the Women’s PGA before she shot 63 in the second round.