Transgender woman Catherine McGregor's bid to play cricket in the women's Big Bash League raises questions about the future of women's sport, according to the Australian Christian Lobby.
A report in today's Sunday Telegraph justifies McGregor's eligibility for selection because she has had sex change surgery, is 60 years old, has taken medication to stop the production of testosterone and now weighs just 70 kilograms.
ACL Managing Director Lyle Shelton said while McGregor's physical profile might allay concerns of an unfair advantage, not all transgender women would fit this.
"What happens when a 100 kilogram 20-year-old man identifying as a woman wants to seek selection for the women's Big Bash League? Or the Australian netball team?"
Mr Shelton said programs like "Safe Schools" were teaching children that their gender is just a social construct and that it was bigotry not to affirm someone in their felt gender.
"Children are being shown posters at school of boys wearing girls' school uniforms as part of 'Safe Schools'. Why can't these transgender 'girls' compete with the girls' in their sporting teams?"
Mr Shelton said anyone working through gender identity issues needed the community's love and support.
"But this should not mean up-ending biological concepts of sex and gender, particularly when there are harmful consequences of altering one's body," he said.
"Parents and more female athletes need to be consulted before the Australian community is led any further down the path of enforced gender theory."