Davies was at 11-over 155 and failed to make the cut by four strokes at the Asian PGA Tour event. She was the fourth woman to take on the men this year, following Annika Sorenstam, Suzy Whaley and Michelle Wie.
'Nothing was bad, but nothing was really good,' Davies said. 'It was just a little bit missing from everything.'
A four-time major winner on the LPGA Tour, Davies finished 15 strokes behind South Korea's Lee Sun-ho, who led at 4-under 140. England's Justin Rose also missed cut, with rounds of 76 and 77.
In the first round, Davies hit two drives into the water and carded a 78 on the 7,042-yard Woo Jeong Hills Country Club course. On Friday, she three-putted several holes.
'I had 35 putts today. It's too many, and you're going to miss every cut with 35 putts,' said Davies, who had six bogeys and one birdie in her second round. 'It's a complete contrast from yesterday, because yesterday I putted really well.'
Davies, a 40-year-old LPGA veteran with 60 wins around the world, said she would compete against men again if the right tournament came up.
'I know I'm good enough to make the cut,' she said. 'I think I could have done a lot better.'
Earlier this year, Sorenstam became the first woman in 58 years to play on the PGA Tour when she missed the cut at the Colonial. Whaley, a Connecticut club pro, was unable to make the cut on a PGA Tour event and Wie, a 13-year-old amateur, failed to do so on the Nationwide Tour.
'I learned a lot ... about the way they play the game, so I enjoyed that aspect of it,' Davies said after playing two rounds with 1995 British Open champion John Daly and S.K. Ho of South Korea.
The Korean Open marked her second challenge against the men. Five years ago, Davies played in the Johnnie Walker Super Tour with eight men, an exhibition in which four rounds were played in four Asian cities. She fell 39 strokes behind winner Vijay Singh.
Davies, the fifth-longest hitter on the LPGA Tour with an average driving distance of 267.2 yards, says she must be be longer off the tee if she wants to succeed in a men's tournament.
'That's what I think the big difference is,' she said. 'It's very hard for me to use 5-irons, 4-irons and 3-irons to get the ball close to birdie.'
Daly showed how it's done. On the 561-yard par-5 18th, he had a good tee shot and then landed a 220-yard 5-iron less than 5 feet from the pin. But he missed the first putt and settled for a birdie, his sixth of the day.
Playing more aggressively, Daly fired a 3-under 69 to improve his score to 2 under to share fourth place.
'I love the way I'm hitting ball,' he said. 'And I love the way I'm putting it.'
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