South Korea's Inbee Park shot a second consecutive five-under-par 66 to take a one shot lead into the third round of the Olympic women's golf tournament in Rio.
The first six holes of the front nine proceeded in exactly the same fashion as yesterday for the world number five, as she attained even par on the first four holes before a birdie on the fifth and another par on the sixth.
Park bogeyed the seventh hole but recovered sinking another five birdies to end the day ten under.
World number seven Stacy Lewis shot an eight-under 63 to move into second place, one shot back.
While her round included three dropped shots – a bogey on the seventh and a double-bogey on the 14th – Lewis also shot an incredible 11 birdies to jump into medal contention.
Like Lewis, teenaged sensation Brooke Henderson also had a so-so first round but now finds herself in the running as well, two shots back after a seven-under 64.
Henderson carded four consecutive birdies on the final four holes as she finished strong.
Charley Hull of team GB shares third place with Henderson after a five-under round of 66 left her on eight under overall.
Candie Kung of Chinese Taipei occupies tied-fifth with Marianne Skarpnord of Norway and Denmark's Nicole Broch Larsen.
Overnight leader Ariya Jutanugarn shot a disappointing even par 71 to drop back to tied-eighth.
Jutanugarn carded three bogeys in an up and down round but is still within range of the leaders, four shots off the pace set by Park.
Joining Jutanugarn on six under overall are India's Aditi Ashok, In Gee Chun of South Korea, Minjee Lee of Australia and American Gerina Piller.
Bryson DeChambeau hopes his victory at the Rocket Mortgage Classic on Sunday has answered his critics.
Overnight leader Matthew Wolff was not able to recover from a poor start.
Americans Ryan Armour and Bryson DeChambeau sit in second place.
The Englishman carded a 66 to put behind him the disappointment of playing alone and missing the cut last week.
Webb Simpson isn’t bothered by the number of the positive tests on the PGA Tour.
The 26-year-old California native revealed he has stuck to a 3,500 calorie a day diet.
The American was forced to pull out of the Rocket Mortgage Classic.
The world number one has become frustrated by errors that have kept him out of contention.
Brendon Todd led the way after the third round of the Travelers Championship.