At Hard Rock Stadium
Surface: Hardcourt outdoor
MIAMI GARDENS (AP) _ Results Saturday from Miami Open at Hard Rock Stadium (seedings in parentheses):
Iga Swiatek (2), Poland, def. Naomi Osaka, Japan, 6-4, 6-0.
John Isner, United States, and Hubert Hurkacz, Poland, def. Wesley Koolhof, Netherlands, and Neal Skupski (6), Britain, 7-6 (5), 6-4.