I agree that only biological women should participate in women's sports. By biological sex our bodies have different strengths and weaknesses, and although one can choose to take hormones, undergo surgery, act or dress as a different gender, it does not change the physiological make-up one one's body, thereby making it unfair for people who were born with the sex 'male' to participate in sports for people who were born with the sex 'female.' 

There are other avenues and sports where biological males and females can compete together, and on the same plain, such as in horseback riding. Women's sports (and men's sports conversely) should be a competition amongst those who were born with the sex 'female.' Please protect their rights.