After an amicable “break up” with her putter, and encouraging start with a new one, two monumental milestones beckon Dame Lydia Ko.

The 29-year-old Kiwi could make the record books after a strong result at this week's US Open.

The Kiwi golfer would better Annika Sorenstam’s career earnings with a strong performance at this weekend’s US Open in California.

If Ko wins she will clinch an LPGA career grand slam and lead the money list.

After an amicable “break up” with her putter, and encouraging start with a new one, two monumental milestones beckon Dame Lydia Ko.

The Kiwi went from eyeballing the leaders to in danger of missing the cut after a rollercoaster opening day.