Tennis World Number One Ash Barty says she is leaving the sport

Tributes have been flowing thick and fast, including one from Prime Minister Scott Morrison, who thanked Ash Barty for inspiring the nation at a time when it was most needed.

World No.1 Ash Barty has announced her retirement from tennis at the age 25, less than two months after winning the Australian Open in Melbourne Source: AAP / JOE CASTRO/AAPIMAGE