Britain's Heather Watson made a winning start at the Australian Open despite her preparations being limited by a 14-day quarantine in her hotel room.
Watson was one of 72 players who underwent a "hard quarantine" on their arrival in Australia, which left them unable to train outdoors for two weeks.
She will play either Anett Kontaveit or Aliaksandra Sasnovich next.
The Briton, ranked 60 in the world, had beaten Pliskova in the opening round of last year's Australian Open.
Watson, who had lost her sole warm-up match, hit 37 winners and overturned a 3-1 deficit in the second set to force a tie-break, before converting her first match point.