In Gee Chun extended her lead at the Women’s PGA  Championship on Friday, firing a 3-under-par 69 to open up a six-stroke  advantage at the halfway stage as she hunts down a third major title.

The 27-year-old South Korean had demolished Congressional Country Club  in Bethesda, Maryland, in Thursday’s first round, shooting a course  record 8-under-64 that left awed rivals in disbelief — and five shots  adrift.

Chun found the going slightly harder on Friday, opening with three early  birdies before back-to-back bogeys checked her progress just before the  turn.

However, she regained those two strokes with birdies on the 10th and  18th to maintain a vice-like grip on the lead heading into the weekend  on 11 under with a 36-hole aggregate 133.

“I got a little pressure for sure because after I had a great first  round, everyone (talked) about how you are, like, five-shot lead,” she  said.

“Now I’m in a good position. Everyone’s expectations are really high. “So it was a little tough to make focus, but I believe it’s another  process in my life ... So I just want to enjoy my next two days.”

Chun’s nearest rivals are New Zealand’s Lydia Ko, who moved up the  leaderboard with a 5-under-par 67, and in-form Jennifer Kupcho, who shot  seven birdies and three bogeys in a 4-under 68.

The last of her two majors came at the ANA Inspiration in Rancho Mirage  in 2016 — the same year she finished second at the Women’s PGA  Championship.

Kupcho, chasing her second major win of the season after victory at the  Chevron Championship in Rancho Mirage in April, said she will not change  her strategy to try and catch Chun.

Five players are tied for fourth on four under, including Canada’s  Brooke Henderson, Australia’s Hannah Green and South Korea’s 2020  Women’s PGA champion Kim Sei-young.