Marta Silva, Joanna Klatten and Min Seo Kwak finished in a three-way tie for second at 3-under 285.
Hsu was steady over the first nine making one birdie on the par-4 eighth hole and eight pars. She seized control of the event with back-to-back birdies on the 10th and 11th holes.
Hsu entered the day with a one stroke lead over Kwak and a two shot edge on Klatten and Silva. While Hsu flourished, Silva and Klatten shot just 1-under while Kwak shot an even-par 72.
Hsu finished on a high note with a birdie on 16, a bogey on 17 and an eagle on the par-5 18th hole. She was doused with water by fellow Symetra Tour players after dropping the putt that sealed victory.
“It’s very exciting to win this tournament,” said Wei-Ling Hsu. “The big prize ($30,000) is very good.”
Hsu skyrocketed all the way from 81st to fourth on the Volvik Race for the Card money list. Her best finish prior to the win was a T27 at the Volvik Championship.
“When I made the putt and everyone started running at me, I said to myself ‘oh my god’,” said the 19-year-old Hsu. “When I won last year in Albany, nobody threw water on me, so I’m happy they did here.”
Hsu, who is in her second year on the Symetra Tour, won the Credit Union Challenge in Albany, New York last year.
With her $30,000 paycheck, the largest in Symetra Tour history, Hsu jumps into the top-10 on Volvik Race for the Card money list with season earnings of $31,810.
“A four-day event is very tough and everybody knows how important the money list is on the Symetra Tour. We also have to travel a lot and spend a lot of money and the money is very important for me and my family.”
This week, Hsu’s caddie was her mother, which was especially fitting on Mother’s Day.
“This morning, my brother told me to win this championship and give your mom a big Mother’s Day gift. Two days ago, I was thinking about what I should get my mom for Mother’s Day, but today I won and I think she is very proud of me.”
Hsu is now eligible for the $1 million Park Sterling Cup challenge. If she also wins the Friends of Mission Charity Classic next week in Asheville, N.C. and the Symetra Classic in Charlotte in two weeks, she will win $1 million.