Yoon opens Women's PGA Championship with record 63 as Hull, Woad sit well back

Ina Yoon matched the best score in the history of the Women's PGA Championship with a nine-under 63 to take a two-stroke lead over Karis Davidson on Thursday in the third major of the season. 

Yoon, a 23-year-old South Korean seeking her first LPGA Tour victory, birdied five of her last six holes at Hazeltine National Golf Club with a putter that was consistently on point.