The 35-year-old, who also had a brief stint in the National Football League (NFL) with the San Francisco 49ers, had pleaded not guilty to both assault charges at the New South Wales District Court.
Reuters reports Hayne, whose bail was continued, will be sentenced at a later date.
In 2021, Hayne was sentenced to five years and nine months in jail on the same charges but that conviction was overturned by the New South Wales Court of Criminal Appeal last year and a new trial ordered.
The first trial ended in a hung jury in 2020.
