Today we introduce the Science of Sport Spotlight, a category of podcast that we intend to use to round up all the big sports stories with a sports science angle, and then share those insights with you. Today, we discuss the news that transgender swimmer Lia Thomas has lost a case brought against World Aquatics' transgender guidelines at the Court of Arbitration for Sport. But it's not entirely as it seems - the case was dismissed because Thomas is not eligible to bring the case as Thomas is no longer a member of US Swimming. In this Spotlight episode, Professor Ross Tucker explains why that is frustrating for World Aquatics and other sports, and why the Thomas case would have made an interesting test in the court. Notes: Sean ingle's article on the decisionThe research paper by Senefeld that analysis Thomas' performance changes with testosterone suppression, alluded to in the showAnother research paper, on which I am a co-author, which explains why the IOC Guideline on the trans issue is so misguidedPatrons only: The discourse thread that mentions the Ultra cycling race won by a trans woman this past weekend You can join the ongoing sports science conversation, and support our work, by becoming a Patron member at this link. That Patron membership gives you access to our Discourse channels, where like-minded enthusiasts discuss sports science and news Get bonus content on Patreon Hosted on Acast. See acast.com/privacy for more information.