Australian Open champion Sofia Kenin of the U.S. poses with the trophy during a photo shoot on the Yarra River in Melbourne, Australia, February 2, 2020. Kenin posed with her maiden Grand Slam trophy on the banks of Melbourne's Yarra River on Sunday after fighting her way back from a set down to beat Spain's Garbine Muguruza in the Australian Open final. REUTERS/Kai Pfaffenbach

Australian Open champion Sofia Kenin of the U.S. poses with her father Alex Kenin during a photo shoot on the Yarra River in Melbourne, Australia, February 2, 2020. Kenin may not have the strength or build of her Spanish opponent, but what she lacked in power she made up for in willpower as she took down double Grand Slam winner Muguruza 4-6 6-2 6-2. REUTERS/Kai Pfaffenbach

Australian Open champion Sofia Kenin of the U.S. poses with the trophy during a photo shoot on the Yarra River in Melbourne, Australia, February 2, 2020. Born in Moscow to Russian immigrant parents, the 14th seed became the youngest American since Serena Williams in 2002 to win a major, with Muguruza double faulting on Kenin's second match point to end an engrossing contest of over two hours. REUTERS/Kai Pfaffenbach

Australian Open champion Sofia Kenin of the U.S. and Australia Open staff with a bottle of champagne during a photo shoot on the Yarra River in Melbourne, Australia, February 2, 2020. Kenin posed with her maiden Grand Slam trophy on the banks of Melbourne's Yarra River on Sunday after fighting her way back from a set down to beat Spain's Garbine Muguruza in the Australian Open final. REUTERS/Kai Pfaffenbach

Australian Open champion Sofia Kenin of the U.S. sprays champagne during a photo shoot on the Yarra River in Melbourne, Australia, February 2, 2020. Kenin posed with her maiden Grand Slam trophy on the banks of Melbourne's Yarra River on Sunday after fighting her way back from a set down to beat Spain's Garbine Muguruza in the Australian Open final. REUTERS/Kai Pfaffenbach

Australian Open champion Sofia Kenin of the U.S. poses with the trophy during a photo shoot on the Yarra River in Melbourne, Australia, February 2, 2020. Kenin posed with her maiden Grand Slam trophy on the banks of Melbourne's Yarra River on Sunday after fighting her way back from a set down to beat Spain's Garbine Muguruza in the Australian Open final. REUTERS/Kai Pfaffenbach