Czechia's Karolina Muchova plays a shot between her legs to Italy's Jasmine Paolini during their quarterfinal match at the United Cup tennis tournament in Sydney, Australia, Friday, Jan. 3, 2025. (AP Photo/Rick Rycroft)

Czechia's Karolina Muchova celebrates her win over Italy's Jasmine Paolini in their quarterfinal match at the United Cup tennis tournament in Sydney, Australia, Friday, Jan. 3, 2025. (AP Photo/Rick Rycroft)

Czechia's Karolina Muchova plays an overhead shot to Italy's Jasmine Paolini during their quarterfinal match at the United Cup tennis tournament in Sydney, Australia, Friday, Jan. 3, 2025. (AP Photo/Rick Rycroft)

Czechia's Karolina Muchova plays a backhand to Italy's Jasmine Paolini in their quarterfinal match at the United Cup tennis tournament in Sydney, Australia, Friday, Jan. 3, 2025. (AP Photo/Rick Rycroft)

Czechia's Karolina Muchova plays a forehand to Italy's Jasmine Paolini during their quarterfinal match at the United Cup tennis tournament in Sydney, Australia, Friday, Jan. 3, 2025. (AP Photo/Rick Rycroft)

Czechia's Tomas Machac, left, celebrates with teammates after defeating Italy's Flavio Cobolli in their quarterfinal match at the United Cup tennis tournament in Sydney, Australia, Friday, Jan. 3, 2025. (AP Photo/Rick Rycroft)

Italy's Jasmine Paolini plays a backhand to Czechia's Karolina Muchova during their quarterfinal match at the United Cup tennis tournament in Sydney, Australia, Friday, Jan. 3, 2025. (AP Photo/Rick Rycroft)

Czechia's Tomas Machac celebrates his win over Italy's Flavio Cobolli during their quarterfinal match at the United Cup tennis tournament in Sydney, Australia, Friday, Jan. 3, 2025. (AP Photo/Rick Rycroft)