Swiatek, the defending champion this week, was in superb touch against an opponent who had been expected to trouble her. Adelaide: Iga Swiatek showcased her Australian Open credentials with a 6-1, 6-2 demolition of US Open finalist Leylah Fernandez at the Adelaide International on Thursday. The Pole, who won the 2020 French Open as a 19-year-old, took just 77 minutes …