15-year-old Amelia Harris shot a 1-under par 72 at Keysborough, and in dreadful, wet, and wintry morning conditions, it was enough to get her equal top on the leaderboard with Aina Fujimoto, the first-round leader.

The story of the week could be Harris, who will return to her home course, Yarra Yarra, for the final two rounds from Thursday with a monumental achievement in her sights.

Rounds of 70-72 have her at 4-under, tied with Fujimoto and a shot clear of South Australian Amelia Whinney and WA's Pantita Phobubpa at 3-under.

Harris would be one of the youngest-ever winners of the national championship, although Kiwi Lydia Ko’s landmark -- she won as a 14-year-old in 2011 at Woodlands – stands as the record.

“I’m feeling pretty good,” said the girl who will begin year 11 studies at Mackinnon Secondary College in Melbourne’s south-eastern suburbs in a couple of weeks. “One-under today in the conditions here was was pretty good. I was hoping for even or 1-under.