Sweet 16s: Jordyn Wieber & Gabby Douglas

Reigning world champion Jordyn Wieber won her second straight U.S. title on Sunday in St. Louis. Dilip Vishwanat/Getty Images

Two 16-year-old Americans are poised to take their budding gymnastics rivalry to London and give the United States a solid 1-2 punch at the 2012 Olympic Games.

Jordyn Wieber, the reigning world champion, won her second straight U.S. title on Sunday, beating Gabby Douglas by 0.2.

"I usually thrive off the pressure, and it's so fun to have someone else so close," Wieber told The Associated Press. "It's more exciting."

The Olympic trials will be held June 28 through July 1 in San Jose, Calif., and the Olympic team will be announced July 1. The trials champion is guaranteed a spot on the five-person London squad. Aly Raisman, who finished third at the U.S. championships, reigning Olympic champion Nastia Liukin and fellow Beijing star Alicia Sacramone were among the gymnasts who made the cut for the trials competition.

At the 2008 Games in Beijing, it was the duo of Liukin and Shawn Johnson who won gold and silver for the United States.

"I like to have this close competition between the front-runners," national team coordinator Martha Karolyi told The Associated Press.

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