The U.S. Olympic and Paralympic Committee has become the latest governing body in the sports world to enact a policy change around transgender athlete competition.

The sex eligibility case of champion runner Caster Semenya has been one of the most contentious and most complex that sports has seen.

Two-time Olympic champion runner Caster Semenya has won a partial victory at the European Court of Human Rights in her seven-year legal fight against track and field’s sex eligibility rules.

A ruling expected this week by the highest chamber of the European Court of Human Rights could reignite champion runner Caster Semenya’s yearslong legal battle against sports authorities over sex eligibility rules.

Track and field moved toward adopting rules that would place athletes assigned female at birth but have higher testosterone levels, like Caster Semenya, under the same set of rules as transgender athletes who were born male and transitioned to female.

It’s been 15 years since a teenage runner from South Africa was publicly scrutinized over her sex at a major sports event.

Women’s boxing at the Paris Olympics has highlighted the complexity of drafting and enforcing sex eligibility rules for women's sports and how athletes like Imane Khelif of Algeria and Lin Yu-ting of Taiwan are left vulnerable in the fallout.

Champion runner Caster Semenya has won what might turn out to be a landmark legal victory.

The European Court of Human Rights is expected to deliver what could be the final judgment on Tuesday in Olympic champion runner Caster Semenya’s yearslong legal challenge against track and field's contentious sex eligibility rules.

Track and field has banned transgender athletes from international competition while adopting new regulations that could keep Caster Semenya and other athletes with differences in sex development from competing.

Track and field’s governing body is facing renewed criticism from some for a proposal to allow transgender athletes to continue competing in top female events with stricter rules.

Steeplechaser Norah Jeruto came up with a cool way to celebrate her victory at the end of a sizzling hot day at the world championships.

Caster Semenya finished 13th in the women’s 5,000 meters Wednesday at the world championships, an expected result for the South African who has been banned from her best event because of rules that demand she take hormone-reducing drugs to enter certain races.

Caster Semenya has been listed to compete at next week’s world championships in Eugene, Oregon.

Bans on transgender women in swimming and rugby this week opened the door for track and field to consider following suit in what could turn into a wave of policy changes in Olympic sports.

A British newspaper has reported that double Olympic champion Caster Semenya said she offered to show her vagina to track officials when she was just 18 years old to prove she was a female.

Olympic gold medalist Caster Semenya is working on a book about her triumphs as a runner and her experiences as an intersex woman with naturally high testosterone levels.

The complex testosterone regulations in track and field have become an issue again at the Olympics after Namibian teenager Christine Mboma surprisingly won a silver medal in the 200 meters after being banned from running in the 400 because of her high natural hormone levels.

Olympic champion Caster Semenya has been sentenced to 50 hours of community service for speeding while driving.

Caster Semenya won the 5,000-meter race at the South African national championships in a personal-best time and then said she's likely to focus on long-distance events for the rest of her career.

The South African's lawyers said there's been a “violation of her rights” and wants the human rights court to examine the rules. That second case will be central to her appeal to the European Court of Human Rights. Ad“I hope the European court will put an end to the longstanding human rights violations by World Athletics against women athletes," Semenya said in a statement. It's unclear if the human rights court would be able to hear Semenya's case before the delayed Tokyo Olympics, which might be Semenya's last. Previous sports cases that have gone to the European Court of Human Rights have taken years to be decided.