It was another early exit for Kvitova after she was defeated by Sloane Stephens in the first round of Wimbledon, the Grand Slam she had won twice.
All the previous editions of the tournament since it became part of the WTA circuit in 2015 were played on clay.
In other first-round games, seventh-seeded Nina Stojanovic of Serbia knocked out Vitalia Diatchenko of Russia 6-7 (5), 6-1, 6-3 while ninth-seeded Greet Minnen of Belgium defeated Giulia Gatto-Monticone of Italy 6-0, 4-6, 6-1.
Former U.S. Open champion Sam Stosur of Australia recorded her sixth straight loss. She was eliminated by American Grace Min 6-3, 2-6, 6-3.