Olympic Champ Gabrielle Douglas Back for Rio

The U.S. women's gymnastics team has a lot to prove next month when the Olympic Games start in Rio. As defending team gold medalists, there's pressure to defend that title, and as the country that's produced the last three all-around champions in a row, there's tremendous expectations to make it a four-peat.

That's very likely to happen, with three-time world champion Simone Biles now officially on the U.S. team. Biles easily won the two-day Olympic trials in San Jose, Calif.