British number two Jodie Burrage cut a frustrated figure as she let a one-set lead slip before losing on her Australian Open main-draw debut.
Burrage was beaten 2-6 6-3 6-0 by Germany's Tamara Korpatsch on the tournament's historic Sunday start.
The Briton made a confident start but faded badly as Korpatsch took control and won nine of the final 10 games.
Burrage was the first of seven Britons playing in the singles, with the rest in action on Monday or Tuesday.
Receiving direct entry into the main draw in Melbourne for the first time was indicative of Burrage's improved form over the past year.