World No. 1 Nelly Korda, who won last year's Chevron, opened with a shocking 7-under 77. Lydia Ko shot 1-over 73 with birdies on two of the last three holes. Ko came into the week battling injury after she woke up Sunday morning with neck spasms.

Mao Saigo of Japan won the Chevron Championship on Sunday for her first major title, making a 3-foot birdie putt on the first hole of a five-way playoff

Saigo was the LPGA Tour’s rookie of the year last season. The Chevron was her first victory, and she became the first Japanese winner in the event.