At Panamerican Tennis Center
Surface: Hardcourt indoor
GUADALAJARA, MEXICO (AP) _ Results Sunday from WTA Finals at Panamerican Tennis Center (seedings in parentheses):
Karolina Pliskova, Czech Republic, def. Barbora Krejcikova, Czech Republic, 0-6, 6-4, 6-4.
Garbine Muguruza, Spain, def. Anett Kontaveit, Estonia, 6-4, 6-4.
Sam Stosur, Australia, and Zhang Shuai, China, def. Shuko Aoyama and Ena Shibahara, Japan, 4-6, 6-3, 10-7.
Nicole Melichar, United States, and Demi Schuurs, Netherlands, def. Andreja Klepac, Slovenia, and Darija Jurak, Croatia, 6-4, 3-6, 10-2.