Caroline Garcia's French Open run is over following a quarter-final defeat to Karolina Pliskova.
"I feel like I can play well on any surface," said Caroline Wozniacki after reaching the French Open quarter-finals.
A surprisingly tricky test against Rebecca Peterson was belatedly passed by Serena Williams in three sets on Friday.
Sofia Kenin was the last player to beat Bianca Andreescu, but she was no match for the teenager on Friday.
Knee injuries have prevented Juan Martin del Potro and Rafael Nadal taking their place in the draw in Miami.