- Chella Choi’s first-nine 29 is the lowest nine-hole score in the U.S. Women’s Open. Five players shot a 30, most recently Jodi Ewart Shadoff in (first round, first nine) in 2013.
- A 29 has only been returned once in a women’s championship. Christina Kim shot a 29 (second round, second nine) in stroke play qualifying at the 2001 U.S. Girls’ Junior.
- Tom Kite is the only player in any USGA Open championship to shoot a 28, which he did in the 2012 U.S. Senior Open (first round, first nine).
- A 29 has been shot five times in USGA Open championships. It was shot three times in the U.S. Open. Neal Lancaster did it twice (fourth round, second nine in 1995 and second round, second nine in 1996) and Vijay Singh did it in 2003 (second round, second nine). It was shot twice at the U.S. Senior Open. Olin Browne did it in 2011 (third round, second nine) and Jay Don Blake did it in 2012 (second round, first nine).
- Choi’s 64 is the lowest third-round score in the U.S. Women’s Open. A 65 had been shot three times, most recently by Na Yeon Choi in 2012.
- Choi’s nine birdies are the most in a round at the U.S. Women’s Open since Lori Kane also made nine in the second round in 1999.