Final day blowout for Ko at Women's Open

Lydia Ko didn't have a the final round she wanted at the Women's Open PHOTO: GOLF NZ

Lydia Ko hasn't been able to defend her British Women's Open title after she suffered a disasterous final round at Royal Porthcawl Golf Club in Wales.

The world No 3 finished the tournament tied 36th after a final round 75 which was anything but consistent.

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She started with a double bogey on the first, then a birdie on the second followed by two consecutive bogeys.

The next hole was a par followed again by two consecutive bogeys. She then had a steady patch of four pars before birdies on the 11th and 12th holes.

Once again Ko proved consistently inconsistent with a bogey on the 17th and birdie on 18th to finish the round at three over.

The title was won by Japan's by Miyu Yamashita at 11-under, two shots ahead of England's Charly Hull and Minami Katsu (Japan).