Before Carly Patterson and Nastia Liukin won the past two Olympic all-around titles, Mary Lou Retton’s 1984 victory stood as the lone triumph for the U.S. women.

Now the Americans believe a three-peat is possible. But if it happens, will it be Jordyn Wieber or Gabby Douglas standing on the top step of the podium in London’s O2 Arena?

The U.S. men’s team is deep and talented. Danell Leyva and John Orozco are potential scene-stealers.

A look at the U.S. gymnastic teams:

WOMEN

Gabby Douglas

Nicknamed the “Flying Squirrel” because she floats on uneven bars, the all-arounder’s top event.

McKayla Maroney

The reigning world champion on vault competed at trials after suffering a concussion weeks earlier at nationals.

Aly Raisman

The steady all-arounder gives the U.S. someone to count on. Shines on floor exercise.

Kyla Ross

The only member of the team who did not compete at last year’s world championships. She’s only 15.

Jordyn Wieber

She is the reigning world and U.S. champion in the all-around.

MEN

Jake Dalton

Oklahoma standout performs jaw-dropping vault and floor exercise routines.

Jonathan Horton

He’s the only returnee from the bronze-winning ’08 team, when he also won silver on the high bar.

Danell Leyva

Cuban immigrant is a contender in the all-around. Reigning world champ on parallel bars.

Sam Mikulak

Michigan star is one of the Americans’ best when healthy. He broke both ankles last summer.

John Orozco

National champion finished second at U.S. trials to Leyva.

The Dallas

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