From this article: 'The ACLU claims that male athletes competing against female athletes benefits everyone. In Connecticut, state titles and state records indicate otherwise. Two males won 15 women’s state championship titles and set 17 new records in just three years.
Further, high school male athletes have recorded faster times than Olympic-level female athletes. For example, Allyson Felix is the “most successful female track athlete” of all time. According to researchers, her personal best in the 400 meters is 49.26 seconds. In 2017 alone, “men and boys around the world outperformed her more than 15,000 times” (emphasis mine).'