Karolina Pliskova of the Czech Republic makes a backhand return to Croatia's Mirjana Lucic-Baroni during their quarterfinal at the Australian Open tennis championships in Melbourne, Australia, Wednesday, Jan. 25, 2017. . Croatia's Mirjana Lucic-Baroni makes a backhand return to Karolina Pliskova of the Czech Republic during their quarterfinal at the Australian Open tennis championships in Melbourne, Australia, Wednesday, Jan. 25, 2017.