
Madison Keys of the U.S. celebrates after defeating Elina Svitolina of Ukraine in their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.
Iga Swiatek of Poland celebrates after defeating Emma Navarro of the U.S. in their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Elina Svitolina of Ukraine plays a forehand return to Madison Keys of the U.S. during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Elina Svitolina of Ukraine plays a forehand return to Madison Keys of the U.S. during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Emma Navarro of the U.S. plays a backhand return to Iga Swiatek of Poland during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Iga Swiatek of Poland plays a backhand return to Emma Navarro of the U.S. during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Emma Navarro of the U.S. makes a backhand return to Iga Swiatek of Poland during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Iga Swiatek of Poland plays a forehand return to Emma Navarro of the U.S. during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Emma Navarro of the U.S. waves as she leaves Rod Laver Arena after her quarterfinal loss to Iga Swiatek of Poland at the Australian Open tennis championship in Melbourne, Australia.

Ben Shelton, left, of the U.S. is congratulated by Lorenzo Sonego of Italy in their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Ben Shelton of the U.S. celebrates after defeating Lorenzo Sonego of Italy in their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Ben Shelton of the U.S. plays a forehand to Lorenzo Sonego of Italy during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Lorenzo Sonego of Italy plays a forehand return to Ben Shelton of the U.S. during their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia.

Lorenzo Sonego of Italy reacts during his quarterfinal match against Ben Shelton of the U.S. at the Australian Open tennis championship in Melbourne, Australia.