These are the gymnasts most likely to dominate at the 2012 Olympics. Here's who to watch:
Wieber is the defending world all-around champion, so all eyes are on her to see if she’ll follow up her world title with an Olympic one.
More on Jordyn Wieber.
Gabrielle Douglas finished just behind Wieber at the US nationals, then beat her by .1 at Olympic Trials in June. The two will likely battle it out for the Olympic all-around title.
More on Gabrielle Douglas.
Viktoria Komova (Russia)Komova was the runner-up to Wieber in 2011, and many, especially in the Russian camp, thought she should have won. She was still healing from an ankle injury at worlds, so could be even better at the Olympics.
Mustafina won the 2010 world all-around title before injuring her ACL at the European Championships in 2011. With a full recovery she will challenge Komova and Wieber for the Olympic all-around gold.
More on Aliya Mustafina.
Yao Jinnan (China)Yao was the all-around bronze medalist at the 2011 worlds, and shows fewer nerves under pressure than many of her Chinese teammates. She could be a medal threat in the all-around again, as well as on bars and beam.
Huang Qiushuang (China)Huang's best event is bars, where she won a bronze medal at the 2011 worlds, and has one of the highest start values in the world. Whens he hits she's an all-around threat as well: She was the all-around silver medalist at the 2010 Asian Games, and has won two World Cup titles.
Maroney won the vault gold at 2011 worlds, and could easily win vault again in London. Though she’s not a lock for the US team, should she be named to the squad, she’ll also help the team on floor, where she mounts with a super-difficult back 3.5 twist.
More on McKayla Maroney.
Catalina Ponor (Romania)Ponor led the Romanian team to gold in 2004, then won beam and floor in event finals, too. This three-event specialist will be counted on to help Romania get back on the podium in London – at the 2011 worlds, the country -- a former powerhouse -- earned no medals.
Uchimura is the best male gymnast in the world right now. He won the last three world all-around titles easily, and should earn Olympic gold in London.
More on Kohei Uchimura.
Philipp Boy (Germany)Boy was the silver medalist in the all-around at both the 2010 and 2011 worlds. Should Uchimura self-destruct, Boy could win.