With Pakin (70) and Kusuma (68) deadlocked at five-under 211 through 54 holes at Shanghai Silport Golf Club, the Sa Kaeo native ended the contest when she sank a three-foot birdie in the second extra hole on the par-five 18th.
It was Kusuma’s first victory since winning the 2013 Wuhan Challenge, reprts the Bangkok Post.
China’s Shi Yuli (70) and Zeng Liqi (70) finished one shot out of the play-off, while Cao Xinyu (69) was the top amateur a shot further back.
“I worked hard and tried a lot. This is my second title in China. The first was in Wuhan many years ago. I am so happy,” said Kusuma, 28.
“I want more wins, so I will keep working harder and harder to get the next one. This win gives me more confidence.”
Pakin, a standout at Kansas University, had a rough start with a bogey five at the first hole, followed by a triple bogey at the 158-yard sixth when her tee shot hit the water to make the turn at 37.
She then closed with a bogey-free back nine featuring three birdies.
“It was a fun week for me. I did my best. I couldn’t ask for more because on the front nine I had a triple bogey and then I had a lot of birdies coming in. It was a fun round for me chasing the championship,” said the 32-year-old Pakin who has been winless on the CLPGA Tour since 2018 when she won the CLPGA Zhuhai Heritage.