Hannah Green has produced her best single round on the LPGA Tour and her equal best as a professional when taking a share of the lead after an opening round of 64 at the Cambia Portland Classic in Portland in Oregon.

Green was out in the afternoon field on day one and complied a bogey-free round which included eight birdies to share the lead with Korean Mi Jung Hur, that pair one ahead of Jane Park.

She will have the benefit of an 8.00am tee time tomorrow to build on her great start.

Of the pre-tournament favourites, Sung Hy Park and Brooke Henderson opened with rounds of 67 while the women’s game’s number one player, Jin Young Ko, is another shot back.

Since her breakthrough LPGA Tour victory at the KPMG Women’s Championship it has not been all plain sailing for Green although there was a break of a month immediately after her win to take in all that comes with being a major champion.

She returned at the Evian Championship but other than a 16th place at the Women’s British Open there has not been a lot to get excited about for the year old in the events since.

Today was a different matter, however, and after missing the cut at last week’s event in Canada she quickly bounced back with her fine start today.

Green also missed the cut on debut in this same event last year but today was a different story.

“Yeah, as soon as I got here, I didn’t play the weekend in Canada, so I worked pretty hard on my putting, and as soon as I got to the first hole, actually I hit it like 10 foot past from a 15-foot putt, so I knew that they were rolling really well and going to be quick.

“I knew putting was really key this week. I’d say it’s one of the shorter courses that we play, and it definitely looked more narrow, so I knew if I kept doing what I was doing and hitting good shots and just holing a couple of putts here and there that you could post a really good score.”

Green’s fellow Australians, Katherine Kirk, Sarah Kemp and Su Oh are at 2 under and 6 from the lead while Robyn Choi is at 1 under.

New Zealand’s Lydia Ko showed improvement with her round of 67.