Searching for her first win in America, McKays round consisted of an eagle, three birdies and one bogey, and comes on the heels of a superb 65 on Friday. Through 54 holes, the 26-year-old has accumulated a total score of 14-under 202.
I was trying to play my own game and keep hitting the shots as well as I have done the last couple of days, said McKay. Fortunately, I was able to do that and make putts along the way.
She leads by one shot over Swedens Maria Hjorth, who went low on Saturday with a career-best 63.
I feel pretty confident, claimed Hjorth. I'm finally starting to make some putts. That's what I'm working very hard on because that's what I'm missing out on. I've been playing well but not really making the putts. That's what you have to do out here to be able to shoot low scores.
Two shots off the pace is another pro from Sweden searching for her first win in America.
Carin Koch ' the star of the 2000 Solheim Cup ' shot a 69 to move to move to minus-12,
I know I'll have to shoot a good score to have a chance tomorrow, said Koch. I'm a couple back. I'll try to do what I'm doing, hit a lot of fairways, lot of greens, and not make bogeys.
Three other players, including some heavy hitters, are just four back in Dottie Pepper (66), Laura Diaz (69) and Grace Park (70).
Mi Hyun Kim heads up another group of three tied for seventh at 9-under.
Full-field scores from the Corning Classic