After tapping in for birdie at the tricky par-five 15th, Seo eventually caught Ahn when she sank a curling 20 foot birdie putt at the par-three 16th. She pulled a shot clear at the par-four 17th and sealed the win with an eight foot birdie putt at the last hole.

“From the very beginning of the event, I thought I could win,” said Seo. “I achieved quite good scores yesterday, which improved my confidence.”

Seo has won five times on the KLPGA Tour this year and said that her game had improved significantly since she spent time practising with her friend Shin over the summer. She said that she could not believe how much Shin practised, which made her improve her short game.

Seo now intends to accept the offer of membership of the LET in category 3 for the current and the next three seasons until the end of 2011, which would see her exempt for the Evian Masters and most other tournaments on the LET schedule.

She added: “What I envied about Shin was that she could have a variety of selections for the events (in which) to participate. I will continue to focus on the KLPGA tour but try to expand my fields by taking part in major LET events.”