Currently a member of the KLPGA Tour, Kim is a seven-time winner in South Korea. She kept giving herself short birdie putts and making them.
Kim birdied her second-to-last hole with daylight waning to claim the lead after Park held it for most of the day with her 67 in the morning session.
No player has won the first three majors in a season with at least four majors. The 2008 U.S. Women’s Open champion, Park has already won five times this year, including her last two tournaments.
American Lizette Salas, Swedes Caroline Hedwall and Anna Nordqvist and South Korea’s I.K. Kim shot 68.
Second-ranked Stacy Lewis opened with a 71, and 16-year-old amateur star Lydia Ko shot 72. Michelle Wie had a quadruple-bogey 8 on No. 10 in a round of 80.
BETHESDA, Md. (AP) _ Roberto Castro took the first-round lead in the AT&T National at Congressional, shooting a 5-under 66 on the difficult course that has hosted three U.S. Opens.
Winless on the PGA Tour, Castro made three straight birdies late in his round with a 20-foot putt, a perfect 3-wood into a par 5 and a chip-in.
Only a dozen players shot in the 60s and the average score was just over 73, despite cloud cover for most of the day leading to soft conditions and only a light wind.
Billy Horschel, who tied for fourth in the U.S. Open two weeks ago at Merion, began his day with a 50-foot birdie putt, added a pair of birdies over the next three holes and then hung on for a 68. That was the best score among the early starters. Bud Cauley and Graham DeLaet each had a 68 in the afternoon.
Defending champion Tiger Woods wasn’t around, unable to play because of a sore left elbow that will keep him out of competition until the British Open next month.
SENIOR PLAYERS CHAMPIONSHIP
PITTSBURGH (AP) _ John Huston shot a 5-under 65 to take the first-round lead in the Senior Players Championship, the third of the Champions Tour’s five majors.