Park won the shootout by one stroke over Carlota Ciganda.
The victory in last week's event was her third championship since late February and fifth LPGA title in the last calendar year.
It pushes her ranking points average to 10.12, just short of a full point ahead of Stacy Lewis (9.13), who is No. 2 in the rankings, and almost two points up on Choi Na-yeon (8.14). Lewis and Choi were in a group tied for seventh in the North Texas event.
Ciganda improves her ranking 20 places to No. 28.
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