The Guardian. The group argues that the latest science shows that trans women have “significant” physical advantages over cis women, adding that it will reconsider its decision if the scientific evidence changes.Contrastingly, the group makes no argument against trans men competing with cisgender men as long as the player undergoes a physical exam and signs a consent form.As it stands, trans women are allowed to play women’s rugby but only if they meet certain guidelines that were first put in place in 2003, which state that a player had to have full gender affirmation surgery, testosterone levels had to be under a certain level for two years, and they had to be identifying as female for at least four years.But those guidelines were updated.