Jiyai Shin capitalizes on Nelly Korda's back-9 struggles to lead by 1 at Women's British Open

Two-time champion Jiyai Shin capitalized on a back-nine collapse by top-ranked Nelly Korda to take a one-shot lead after the third round of the Women's British Open at St. Andrews on Saturday.

Nothing will give the 36-year-old Shin more confidence heading into the final round than how she collected the last of her seven birdies in a 5-under 67 at the home of golf.

On the par-4 17th, the famous Road Hole, the former world No. 1 hit a fairway wood that landed at the front of the green and rolled round to inside two feet from the pin.

That took Shin to 7-under par at the fifth and final major of the year, and it's the number the South Korean will set off on Sunday in her bid to follow up her titles at the British Open in 2008 and 2012.

Korda is also seeking her third major title — it would be her first at the British Open — but will start two strokes off the lead after seeing her form of the opening two days desert her in shooting 75.

Starting with a three-shot advantage, the American missed short putts for bogeys at her first two holes to drop into a share of the lead, only to regain it with three birdies before the turn.

Korda lost her way on the back nine, missing a par putt from 4 feet at No. 12, another from 5 feet at No. 13 and then making double on No. 16 after pushing her drive out of bounds.

There was another bogey at the 17th — a tough hole she had birdied on Thursday and Friday — but a birdie at the last left Korda in third place.

"It's nice to finish with a birdie," Korda said, "but it wasn't the best of days."

Defending champion Lilia Vu, playing alongside Korda in the last pairing, rolled in a birdie putt on No. 18 to shoot 71 and be alone in second place.

Olympic champion Lydia Ko (71) and Jenny Shin (70)