evidence: Transgender swimmer Lia Thomas has begun legal proceedings against World Aquatics, swimming’s governing body, after it voted to restrict transgender athletes from competing in elite women’s aquatics competitions, according to the Court of Arbitration for Sport. [...] Thomas’ legal focus aims to overturn the policy that dictates male-to-female transgender athletes would only be eligible to compete in the women’s categories if they transition before the age of 12 or before they reach stage two of the puberty Tanner Stages. [...] The debate on transgender women in swimming, which led to the new gender inclusion policy and open category, came under a spotlight when Thomas, a University of Pennsylvania swimmer who started on the school’s men’s swimming team in 2017, eventually joined the UPenn women’s team in 2020.