The United States may be the favorite to defend its gold medal in the women's individual all-around competition, but it will have to face some stiff competition to do so.
In 2008, Nastia Liukin edged out fellow American Shawn Johnson, as the duo placed first and second, respectively.
The qualifying round of this year's all-around competition provided some similar drama, as 2011 individual all-around world champion Jordyn Wieber failed to qualify as one of the two best American individuals.
Instead, she was edged out by 18-year-old Aly Raisman, her friend and teammate, who will join Gabby Douglas in defending their country's all-around gold medal.
After a strong showing during the team portion of the competition, though, Douglas looks to be the favorite heading into the individual all-around.
Douglas was the only American in the team competition to have her scores counted for all four events.
However, there are still plenty of other talented gymnasts who could have a great day and swipe gold from Douglas.
Here are those athletes: