Daley Thompson won two Olympic gold medals in the decathlon. Daley Thompson, a former British decathlete who won two Olympic gold medals, spoke out against transgender participation in girls and women’s sports in a video for Fair Play For Women. Thompson’s remarks came amid controversy over transgender females competing against biological women in sports. Last week, British Cycling prohibited transgender female athletes from competing against biological women. The organization will have an "open" category, which will allow transgender women, transgender men, non-binary individuals and those born male and female to compete.