WA wildcard Astra Sharma has lost her delayed first-round match at the Australian Open in Melbourne.

Making a belated start to the Open following Monday’s washout and Tuesday’s uncompleted schedule, Sharma went down 6-0 6-2 to Estonian 28th seed Anett Kontaviet.

Sharma and world No.1 Ashleigh Barty were among five Australians scheduled on Wednesday, with John Millman, Jordan Thompson and Marc Polmans also in action later.