It's a great thing for those who love compelling rivalries in sports, and it should make for one of the great storylines of the Paris Olympics.

Russian figure skater Kamila Valieva was allowed to skate at the Olympics in the short program partly because her age gives her extra rights as a “protected person” in a doping case.

Meet Sky Brown, a skateboarding prodigy who is on the verge of becoming one of the youngest athletes to ever compete at the Summer Olympics.