Simone Biles and Riley Gaines traded social media barbs over the latter's recent comments advocating for the exclusion of transgender athletes in women's sports.

Olympic champion Simone Biles and conservative activist Riley Gaines clashed on social media over transgender athletes.

Simone Biles went toe-to-toe with political activist Riley Gaines after the former competitive swimmer allegedly made comments about transgender athletes playing sports. Gaines, 25, reposted the Minnesota State High School League’s Friday,