A US-based organisation that campaigns for LGBT sportspeople has cut its links with tennis legend Martina Navratilova over comments she made about male-to-female transgender athletes.
The 18-times Grand Slam winner wrote it was "cheating" to allow transgender women to compete in women's sport as they had unfair physical advantages.
Athlete Ally said the remarks were transphobic and perpetuated myths.
It said it had sacked the star from its advisory board and as an ambassador.
In an article for the British newspaper The Sunday Times, Navratilova wrote: "A man can decide to be female, take hormones if required by whatever sporting organisation is concerned, win everything in sight and perhaps earn a small fortune, and then reverse his decision and go back to making babies if he so desires.