With her first three rounds at the 2017 Thornberry Creek LPGA Classic, Katherine Kirk hit 20 under par and found herself with an outside chance at seizing the LPGA Tour's 72-hole scoring record.
The LPGA Tour's 72-hole scoring record is 258, which was set by Karen Stupples in the 2004 Welch’s/Fry’s Championship at Dell Urich Golf Course, Tucson, Ariz., with a 22-under total. Wendy Doolan won the tournament the year prior on the same course with a total one stroke worse.
The Tour's scoring record in relation to par for a 72-hole event is owned by Annika Sorenstam, who shot 27-under total of 261 in winning the 2001 Standard Register Ping at Moon Valley Country Club, Phoenix, Ariz. -- a four-round total that included the LPGA Tour's only ever 59. Karrie Webb shot 26 under par in winning the 1999 Australian Ladies Masters Royal Pines Resort.
The LPGA Tour 54-hole scoring record also belongs to Annika Sorenstam. She shot 192 -- a 24-under total -- through the first three rounds of the 2003 Mizuno Classic at Seta Golf Course in Japan. That 24-under total is also good enough for the LPGA record for 54 holes against par.
The 36-hole scoring record on the LPGA belongs to, you guessed it, Annika Sorenstam from the 2001 Standard Register Ping. Her 65-59--124 total set the record against both par (20-under total) and in aggregate.
Sorenstam's 59 is the only sub-60 score in LPGA history, with four players shooting 60 at different points in LPGA history.