2nd-seeded Pliskova, Gauff eliminated at Ostrava Open

Veronika Kudermetova of Russia returns a ball against Karolina Pliskova of Czech Republic during the Ostrava Open 2020 tennis tournament in Ostrava, Czech Republic, Thursday, Oct. 22, 2020. (Jaroslav Ozana/CTK via AP)

Cori Gauff of U.S. returns the ball to Aryna Sabalenka of Belarus during the J&T Banka Ostrava Open 2020 tennis tournament in Ostrava, Czech Republic, Thursday, Oct. 22, 2020. (AP Photo via CTK/Jaroslav Ozana)

Cori Gauff of U.S. returns a ball against Aryna Sabalenka of Belarus during the Ostrava Open 2020 tennis tournament in Ostrava, Czech Republic, Thursday, Oct. 22, 2020. (Jaroslav Ozana/CTK via AP)

Karolina Pliskova of Czech Republic plays a ball against Veronika Kudermetova during the J&T Banka Ostrava Open 2020 tennis tournament in Ostrava, Czech Republic, Thursday, Oct. 22, 2020. (Jaroslav Ozana/CTK via AP)

Veronika Kudermetova of Russia returns a ball against Karolina Pliskova of Czech Republic during the Ostrava Open 2020 tennis tournament in Ostrava, Czech Republic, Thursday, Oct. 22, 2020. (Jaroslav Ozana/CTK via AP)

Karolina Pliskova of Czech Republic returns a ball against Veronika Kudermetova during the Ostrava Open 2020 tennis tournament in Ostrava, Czech Republic, Thursday, Oct. 22, 2020. (Jaroslav Ozana/CTK via AP)