Lydia Ko's win at the Marathon Classic in Ohio yesterday was special for more than one reason.

Not only was it her 14th LPGA title and her fourth this year, but it also helped her top the $US7 million ($NZ10 million) mark for career tournament earnings, according to the LPGA Tour website.

That's not including the US$2m Ko has won in bonus prizes for topping the Race to the CME Globe standings the last two seasons, which takes her total earnings to almost NZ$13m.

The $316,000 she received from her win yesterday helping her over the mark at just 19 years of age.

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Already this year she has accumulated $3.6 million with the British Open her last event before the 2016 Rio Olympics.

It is an unprecedented run of form that has seen the young Kiwi firmly solidify her spot as the number one golfer in the world.

Ko's LPGA results in 2016 are as follows:

3rd - Coates Golf Championship
2nd - ISPS Handa Women's Australian Open
15th - HSBC Women's Champions
2nd - JTBC Founders Cup
1st - Kia Classic
1st - ANA Inspiration
23rd - Lotte Championship
6th - Swinging Skirts LPGA Classic
18th - Kingsmill Championship
16th - LPGA Volvik Championship
2nd - KPMG Women's PGA Championship
4th - Meijer LPGA Classic for Simply Give
1st - Walmart NW Arkansas Championship
3rd - US Open
1st - Marathon Classic