Britain's Johanna Konta falls as shie plays United States' Bernarda Pera during their second round match at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 18, 2018. (AP Photo/Andy Brownbill)
United States' Sam Querrey reacts to a lost point against Hungary's Marton Fucsovics during their second round match at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 18, 2018. (AP Photo/Ng Han Guan)
United States' Bernarda Pera celebrates win over Britain's Johanna Konta during their second round match at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 18, 2018. (AP Photo/Andy Brownbill)
Britain's Johanna Konta leaves the court after loss to United States' Bernarda Pera during their second round match at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 18, 2018. (AP Photo/Andy Brownbill)
Russia's Maria Sharapova signs autographs after defeating Germany's Tatjana Maria during their first round match at the Australian Open tennis championships in Melbourne, Australia, Tuesday, Jan. 16, 2018. (AP Photo/Vincent Thian)
Russia's Maria Sharapova celebrates win over Latvia's Anastasija Sevastova in their second round match at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 18, 2018. (AP Photo/Vincent Thian)
Russia's Maria Sharapova celebrates win over Latvia's Anastasija Sevastova in their second round match at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 18, 2018. (AP Photo/Vincent Thian)
Spain's Garbine Muguruza waves as she leaves Rod Laver Arena following her second round loss to Taiwan's Hsieh Su-wei at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 18, 2018. (AP Photo/Vincent Thian)
Taiwan's Hsieh Su-wei celebrates after defeating Spain's Garbine Muguruza in their second round match at the Australian Open tennis championships in Melbourne, Australia, Thursday, Jan. 18, 2018. (AP Photo/Vincent Thian)
